Displaying publications 601 - 620 of 660 in total

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  1. Fulltext Plasmodium knowlesi: reservoir hosts and tracking the emergence in humans and macaques
    Lee KS, Divis PC, Zakaria SK, Matusop A, Julin RA, Conway DJ, et al.
    PLoS Pathog, 2011 Apr;7(4):e1002015.
    PMID: 21490952 DOI: 10.1371/journal.ppat.1002015
    Plasmodium knowlesi, a malaria parasite originally thought to be restricted to macaques in Southeast Asia, has recently been recognized as a significant cause of human malaria. Unlike the benign and morphologically similar P. malariae, these parasites can lead to fatal infections. Malaria parasites, including P. knowlesi, have not yet been detected in macaques of the Kapit Division of Malaysian Borneo, where the majority of human knowlesi malaria cases have been reported. In order to extend our understanding of the epidemiology and evolutionary history of P. knowlesi, we examined 108 wild macaques for malaria parasites and sequenced the circumsporozoite protein (csp) gene and mitochondrial (mt) DNA of P. knowlesi isolates derived from macaques and humans. We detected five species of Plasmodium (P. knowlesi, P. inui, P. cynomolgi, P. fieldi and P. coatneyi) in the long-tailed and pig-tailed macaques, and an extremely high prevalence of P. inui and P. knowlesi. Macaques had a higher number of P. knowlesi genotypes per infection than humans, and some diverse alleles of the P. knowlesi csp gene and certain mtDNA haplotypes were shared between both hosts. Analyses of DNA sequence data indicate that there are no mtDNA lineages associated exclusively with either host. Furthermore, our analyses of the mtDNA data reveal that P. knowlesi is derived from an ancestral parasite population that existed prior to human settlement in Southeast Asia, and underwent significant population expansion approximately 30,000-40,000 years ago. Our results indicate that human infections with P. knowlesi are not newly emergent in Southeast Asia and that knowlesi malaria is primarily a zoonosis with wild macaques as the reservoir hosts. However, ongoing ecological changes resulting from deforestation, with an associated increase in the human population, could enable this pathogenic species of Plasmodium to switch to humans as the preferred host.
    Matched MeSH terms: Borneo/epidemiology
  2. Fulltext Evaluation of three rapid diagnostic tests for the detection of human infections with Plasmodium knowlesi
    Foster D, Cox-Singh J, Mohamad DS, Krishna S, Chin PP, Singh B
    Malar J, 2014;13:60.
    PMID: 24548805 DOI: 10.1186/1475-2875-13-60
    Plasmodium knowlesi, a malaria parasite of Southeast Asian macaques, infects humans and can cause fatal malaria. It is difficult to diagnose by microscopy because of morphological similarity to Plasmodium malariae. Nested PCR assay is the most accurate method to distinguish P. knowlesi from other Plasmodium species but is not cost effective in resource-poor settings. Rapid diagnostic tests (RDTs) are recommended for settings where malaria is prevalent. In this study, the effectiveness of three RDTs in detecting P. knowlesi from fresh and frozen patient blood samples was evaluated.
    Matched MeSH terms: Borneo
  3. Fulltext Susceptibility of human Plasmodium knowlesi infections to anti-malarials
    Fatih FA, Staines HM, Siner A, Ahmed MA, Woon LC, Pasini EM, et al.
    Malar J, 2013;12:425.
    PMID: 24245918 DOI: 10.1186/1475-2875-12-425
    Evidence suggests that Plasmodium knowlesi malaria in Sarawak, Malaysian Borneo remains zoonotic, meaning anti-malarial drug resistance is unlikely to have developed in the absence of drug selection pressure. Therefore, adequate response to available anti-malarial treatments is assumed.
    Matched MeSH terms: Borneo
  4. Trace metal (Cd, Cu, Fe, Mn, Ni and Zn) accumulation in Scleractinian corals: a record for Sabah, Borneo
    Mokhtar MB, Praveena SM, Aris AZ, Yong OC, Lim AP
    Mar Pollut Bull, 2012 Nov;64(11):2556-63.
    PMID: 22901962 DOI: 10.1016/j.marpolbul.2012.07.030
    This study was designed as the first to assess the trace metal (Cd, Cu, Fe, Mn, Ni and Zn) in coral skeleton in relation to metal availabilities and sampling locations in Sabah. The study also aims to determine the differential abilities of Scleractinian coral species as a bioindicator of environmental conditions. Skeletons of Scleractinian coral (Hydnophora microconos, Favia speciosa and Porites lobata) showed concentrations of Fe, Mn and Ni relatively higher than Cd and Zn in the skeletons. Statistical analyses outputs showed significant relationships between trace metal concentrations in coral species and those in seawater and sediment. The highest bioaccumulation factors among three Scleractinian coral species investigated was for Zn followed by Mn, Ni, Fe, Cd and Cu can provide a sign about pollution levels. However, metal tolerance, coral structure and morphology as well as multispecies monitoring are factors that need to be a focus in future studies.
    Matched MeSH terms: Borneo
  5. Essential oil composition, cytotoxic and antibacterial activities of five Etlingera species from Borneo
    Vairappan CS, Nagappan T, Palaniveloo K
    Nat Prod Commun, 2012 Feb;7(2):239-42.
    PMID: 22474969
    Essential oils obtained by hydrodistillation from the rhizomes of Etlingera pyramidosphaera (K. Schum.) R. M. Sm, E. megalocheilos (Griff.) A.D. Poulsen, comb. nov., E. coccinea (Blume) S. Sakai & Nagam, E. elatior (Jack) R. M. Sm, and E. brevilabrum (Valeton) R. M. Sm were analyzed by GCMS. The highest oil yield was obtained from E. pyramidosphaera (0.45%), followed by E. elatior (0.38%), E. coccinea (0.30%), E. brevilabrum (0.28%) and E. megalocheilos (0.25%). The major constituents of the essential oils were oxygenated monoterpenes, followed by sesquiterpenes, oxygenated sesquiterpenes, oxygenated diterpenes and diterpenes. The essential oils from E. pyramidosphaera and E. brevilabrum exhibited the best cytotoxicity against MCF 7 (LC50: 7.5 +/- 0.5 mg mL(-1)) and HL 60 (LC50: 5.0 mg mL(-1)), respectively. Strong inhibition was also observed for the essential oils of E. coccinea and E. megalocheilos against Staphylococcus aureus (MIC: 8.0 +/- 0.5 mg mL(-1), and 5.0 +/- 0.5 mg mL(-1)) and Streptococcus pyrogenes (MIC: 6.0 +/- 0.5 mg mL(-1) and 8.0 +/- 0.5 mg mL(-1)).
    Matched MeSH terms: Borneo
  6. Fulltext Long-term field data and climate-habitat models show that orangutan persistence depends on effective forest management and greenhouse gas mitigation
    Gregory SD, Brook BW, Goossens B, Ancrenaz M, Alfred R, Ambu LN, et al.
    PLoS One, 2012;7(9):e43846.
    PMID: 22970145 DOI: 10.1371/journal.pone.0043846
    Southeast Asian deforestation rates are among the world's highest and threaten to drive many forest-dependent species to extinction. Climate change is expected to interact with deforestation to amplify this risk. Here we examine whether regional incentives for sustainable forest management will be effective in improving threatened mammal conservation, in isolation and when combined with global climate change mitigation.
    Matched MeSH terms: Borneo
  7. Fulltext Genetic Diversity, Natural Selection and Haplotype Grouping of Plasmodium knowlesi Gamma Protein Region II (PkγRII): Comparison with the Duffy Binding Protein (PkDBPαRII)
    Fong MY, Rashdi SA, Yusof R, Lau YL
    PLoS One, 2016;11(5):e0155627.
    PMID: 27195821 DOI: 10.1371/journal.pone.0155627
    BACKGROUND: Plasmodium knowlesi is a simian malaria parasite that has been reported to cause malaria in humans in Southeast Asia. This parasite invades the erythrocytes of humans and of its natural host, the macaque Macaca fascicularis, via interaction between the Duffy binding protein region II (PkDBPαRII) and the Duffy antigen receptor on the host erythrocytes. In contrast, the P. knowlesi gamma protein region II (PkγRII) is not involved in the invasion of P. knowlesi into humans. PkγRII, however, mediates the invasion of P. knowlesi into the erythrocytes of M. mulata, a non-natural host of P. knowlesi via a hitherto unknown receptor. The haplotypes of PkDBPαRII in P. knowlesi isolates from Peninsular Malaysia and North Borneo have been shown to be genetically distinct and geographically clustered. Also, the PkDBPαRII was observed to be undergoing purifying (negative) selection. The present study aimed to determine whether similar phenomena occur in PkγRII.

    METHODS: Blood samples from 78 knowlesi malaria patients were used. Forty-eight of the samples were from Peninsular Malaysia, and 30 were from Malaysia Borneo. The genomic DNA of the samples was extracted and used as template for the PCR amplification of the PkγRII. The PCR product was cloned and sequenced. The sequences obtained were analysed for genetic diversity and natural selection using MEGA6 and DnaSP (version 5.10.00) programmes. Genetic differentiation between the PkγRII of Peninsular Malaysia and North Borneo isolates was estimated using the Wright's FST fixation index in DnaSP (version 5.10.00). Haplotype analysis was carried out using the Median-Joining approach in NETWORK (version 4.6.1.3).

    RESULTS: A total of 78 PkγRII sequences was obtained. Comparative analysis showed that the PkγRII have similar range of haplotype (Hd) and nucleotide diversity (π) with that of PkDBPαRII. Other similarities between PkγRII and PkDBPαRII include undergoing purifying (negative) selection, geographical clustering of haplotypes, and high inter-population genetic differentiation (FST index). The main differences between PkγRII and PkDBPαRII include length polymorphism and no departure from neutrality (as measured by Tajima's D statistics) in the PkγRII.

    CONCLUSION: Despite the biological difference between PkγRII and PkDBPαRII, both generally have similar genetic diversity level, natural selection, geographical haplotype clustering and inter-population genetic differentiation index.

    Matched MeSH terms: Borneo
  8. Differential permethrin susceptibility of head lice sampled in the United States and Borneo
    Pollack RJ, Kiszewski A, Armstrong P, Hahn C, Wolfe N, Rahman HA, et al.
    Arch Pediatr Adolesc Med, 1999 Sep;153(9):969-73.
    PMID: 10482215 DOI: 10.1001/archpedi.153.9.969
    BACKGROUND: Pediculiasis is treated aggressively in the United States, mainly with permethrin- and pyrethrin-containing pediculicides. Increasingly frequent anecdotal reports of treatment failure suggest the emergence of insecticidal resistance by these lice.

    OBJECTIVE: To confirm or refute the susceptibility of head lice sampled in the United States to permethrin.

    DESIGN: Survey. Head lice were removed from children residing where pediculicides are readily available and where such products are essentially unknown. Their survival was compared following exposure to residues of graded doses of permethrin in an in vitro bioassay.

    SETTING: School children from Massachusetts, Idaho, and Sabah (Malaysian Borneo).

    SUBJECTS: In the United States, 75 children aged 5 to 8 years. In Sabah, 59 boys aged 6 to 13 years. Virtually all sampled US children had previously been treated with pediculicides containing pyrethrins or permethrin; none of the Sabahan children were so exposed.

    MAIN OUTCOME MEASURE: Survival of head lice exposed to permethrin.

    RESULTS: Permethrin did not affect head lice sampled from chronically infested US children who had previously been treated for pediculiasis. The slope of the dose-response regression line for these lice did not differ significantly from zero (P = .66). This pediculicide immobilized lice sampled in Sabah. Mortality correlated closely with permethrin concentration (P = .008).

    CONCLUSIONS: Head lice in the United States are less susceptible to permethrin than are those in Sabah. The pyrethroid susceptibility of the general population of head lice in the United States, however, remains poorly defined. Accordingly, these relatively safe over-the-counter preparations may remain the pediculicides of choice for newly recognized louse infestations.
    Matched MeSH terms: Borneo
  9. The treatment of malaria in glucose-6-phosphate dehydrogenase deficient patients in Sabah
    Khoo KK
    Ann Trop Med Parasitol, 1981 Dec;75(6):591-5.
    PMID: 7325735 DOI: 10.1080/00034983.1981.11687489
    One hundred and nine (9·8%) out of 1103 malaria patients examined in Sabah were deficient in glucose-6-phosphate dehydrogenase (G6PD). Sixty-nine of these G6PD-deficient patients were randomly allocated to one of three treatment regimes with (a) chloroquine, (b) chloroquine and primaquine or (c) sulfadoxine-pyrimethamine (Fansidar). No haemolysis was observed in group (a); except for a single mild case, no haemolysis was seen in group (c). However, in the primaquine group (23 patients), haemolysis occurred in seven of the 16 patients who had complete G6PD deficiency. Of these seven, five required blood transfusion and the other two developed acute renal failure, one requiring peritoneal dialysis. In the Fansidar group (c), four of the 22 patients took more than 15 days to clear the parasitaemia. Chloroquine resistance to falciparum infection was common in the patients given this anti-malarial.
    Study site: Queen Elizabeth Hospital, Kola Kinabalu, Sabah, Malaysia
    Matched MeSH terms: Borneo
  10. Rites of consent: negotiating research participation in diverse cultures
    Barrett RJ, Parker DB
    Monash Bioeth Rev, 2003 Apr;22(2):9-26.
    PMID: 15069953
    The significance of informed consent in research involving humans has been a topic of active debate in the last decade. Much of this debate, we submit, is predicated on an ideology of individualism. We draw on our experiences as anthropologists working in Western and non Western (Iban) health care settings to present ethnographic data derived from diverse scenes in which consent is gained. Employing classical anthropological ritual theory, we subject these observational data to comparative analysis. Our article argues that the individualist assumptions underlying current bioethics guidelines do not have universal applicability, even in Western research settings. This is based on the recognition that the social world is constitutive of personhood in diverse forms, just one of which is individualistic. We submit that greater attention must be paid to the social relations the researcher inevitably engages in when conducting research involving other people, be this in the context of conventional medical research or anthropological field work. We propose, firstly, that the consenting process continues throughout the life of any research project, long after the signature has been secured, and secondly, that both group and individual dimensions of consent, and the sequence in which these dimensions are addressed, should be carefully considered in all cases where consent is sought.
    Matched MeSH terms: Borneo
  11. Mode of attachment and lesions associated with trypanorhynch cestodes in the gastrointestinal tracts of two species of sharks collected from coastal waters of Borneo
    Borucinska JD, Caira JN
    J Fish Dis, 2006 Jul;29(7):395-407.
    PMID: 16866923
    Lesions associated with two species of tapeworms within the digestive tract of wild-caught specimens of the bull shark, Carcharhinus leucas, and the sicklefin weasel shark, Hemigaleus microstoma, from Malaysian Borneo are described. Portions of the glandular stomach and pyloric gut with parasites were removed and fixed in 10% formalin buffered in sea water. Whole mounts, histological sections of tissues with and without worms in situ, and scanning electron microscopy images of detached worms were examined. Both species of cestodes belonged to the trypanorhynch family Tentaculariidae. Heteronybelinia estigmena was found in large numbers parasitizing the pyloric gut of C. leucas; an unidentified tentaculariid was found in relatively small numbers in both the glandular stomach and pyloric gut of H. microstoma. Both species burrowed their scoleces deeply in the mucosa and attached via hooked tentacles and unciniform microtriches of the scolex. The lesions induced by the parasites were marked in both sharks and ranged from acute necrotizing to chronic granulomatous gastroenteritis. Regenerative hyperplasia and intestinal metaplasia of gastric epithelium were also present. The severity and character of pathology was causally linked to the intensity of infection, the attachment mode of the parasites, and to the anatomophysiological relationships within the gut of the host shark.
    Matched MeSH terms: Borneo
  12. Fulltext Chemical immobilization of free-ranging and captive Sunda clouded leopards (Neofelis diardi) with two anesthetic protocols: medetomidine-ketamine and tiletamine-zolazepam
    Nájera F, Hearn AJ, Ross J, Ramírez Saldivar DA, Evans MN, Guerrero-Sánchez S, et al.
    J Vet Med Sci, 2017 Nov 17;79(11):1892-1898.
    PMID: 28904261 DOI: 10.1292/jvms.17-0259
    There is currently no available information regarding the veterinary management of Sunda clouded leopards (Neofelis diardi), either in captivity or in the wild. In this study, 12 Sunda clouded leopards were anesthetized between January 2008 and February 2014 for medical exams, and/or GPS-collaring. Seven wild-caught individuals were kept in captivity and 5 free-ranging animals were captured by cage traps. Two anesthesia combinations were used: medetomidine-ketamine (M-K) or tiletamine-zolazepam (T-Z). Atipamezole (0.2 mg/kg im) was used as an antagonist for medetomidine. Medetomidine (range: 0.039-0.054 mg/kg) and ketamine (range: 3-4.39 mg/kg) were administered during 5 immobilizations, resulting in median induction times of 7 min. After a median anesthesia time of 56 min, atipamezole was injected, observing effects of antagonism at a median time of 12 min. T-Z (range: 6.8-10.8 mg/kg) was administered on 7 occasions. Median induction times observed with this combination were shorter than with M-K (4 min vs 7 min; P=0.04), and anesthesia and recovery times were significantly longer (244 and 35 min vs 56 and 16 min, respectively; P=0.02). Lower heart rates were measured in the M-K group, while lower rectal temperatures were found in the T-Z group. Both combinations resulted in safe and reliable immobilizations, although given the favorable anesthesia and recovery times of M-K, we recommend this approach over T-Z for the veterinary handling of Sunda clouded leopards.
    Matched MeSH terms: Borneo
  13. Fulltext Distribution of the Duffy genotypes in Malaysian Borneo and its relation to Plasmodium knowlesi malaria susceptibility
    de Silva JR, Amir A, Lau YL, Ooi CH, Fong MY
    PLoS One, 2019;14(9):e0222681.
    PMID: 31536563 DOI: 10.1371/journal.pone.0222681
    The Duffy blood group plays a key role in Plasmodium knowlesi and Plasmodium vivax invasion into human erythrocytes. The geographical distribution of the Duffy alleles differs between regions with the FY*A allele having high frequencies in many Asian populations, the FY*B allele is found predominately in European populations and the FY*Bes allele found predominantly in African regions. A previous study in Peninsular Malaysia indicated high homogeneity of the dominant FY*A/FY*A genotype. However, the distribution of the Duffy genotypes in Malaysian Borneo is currently unknown. In the present study, the distribution of Duffy blood group genotypes and allelic frequencies among P. knowlesi infected patients as well as healthy individuals in Malaysian Borneo were determined. A total of 79 P. knowlesi patient blood samples and 76 healthy donor samples were genotyped using allele specific polymerase chain reaction (ASP-PCR). Subsequently a P. knowlesi invasion assay was carried out on FY*AB/ FY*A and FY*A/ FY*A Duffy genotype blood to investigate if either genotype conferred increased susceptibility to P. knowlesi invasion. Our results show almost equal distribution between the homozygous FY*A/FY*A and heterozygous FY*A/FY*B genotypes. This is in stark contrast to the Duffy distribution in Peninsular Malaysia and the surrounding Southeast Asian region which is dominantly FY*A/FY*A. The mean percent invasion of FY*A/FY*A and FY*A/FY*B blood was not significantly different indicating that neither blood group confers increased susceptibility to P. knowlesi invasion.
    Matched MeSH terms: Borneo
  14. Application of a multi-faceted approach for the assessment of treatment response in falciparum malaria: a study from Malaysian Borneo
    Cox-Singh J, Lu HY, Davis TM, Ilett KF, Hackett LP, Matusop A, et al.
    Int J Parasitol, 2003 Nov;33(13):1545-52.
    PMID: 14572517
    Thirty-two patients reporting to the Lundu District Hospital, Sarawak, Malaysian Borneo, with uncomplicated falciparum malaria were recruited into a multifaceted study to assess treatment response. Following combined chloroquine and sulphadoxine/pyrimethamine treatment the patients were followed for 28 days according to the World Health Organisation in vivo drug response protocol. The in vivo study revealed that 13 (41%) of the patients had a sensitive response to treatment, five (16%) cleared asexual stage parasites but had persistent gametocytes, 11 (34%) had RI type resistance and three (9%) had RII type resistance requiring quinine intervention before day 7 for parasite clearance. Although clinically insignificant, patients with persistent gametocytes, surviving chloroquine and sulphadoxine/pyrimethamine treatment during maturation, were placed in the reduced response to treatment group for analysis. Allelic typing detected 100% prevalence of the pfcrt K76T marker associated with chloroquine resistance and 78% prevalence of the pfdhfr NRNL haplotype associated with sulphadoxine/pyrimethamine treatment failure. High serum chloroquine levels and pfdhfr haplotypes with
    Matched MeSH terms: Borneo
  15. Genetic characterisation of the erythrocyte-binding protein (PkβII) of Plasmodium knowlesi isolates from Malaysia
    Fong MY, Lau YL, Jelip J, Ooi CH, Cheong FW
    J Genet, 2019 Sep;98.
    PMID: 31544794
    Plasmodium knowlesi contributes to the majority of human malaria incidences in Malaysia. Its uncontrollable passage among the natural monkey hosts can potentially lead to zoonotic outbreaks. The merozoite of this parasite invades host erythrocytes through interaction between its erythrocyte-binding proteins (EBPs) and their respective receptor on the erythrocytes. The regionII of P. knowlesi EBP, P. knowlesi beta (PkβII) protein is found to be mediating merozoite invasion into monkey erythrocytes by interacting with sialic acid receptors. Hence, the objective of this study was to investigate the genetic diversity, natural selection and haplotype grouping of PkβII of P. knowlesi isolates in Malaysia. Polymerase chain reaction amplifications of PkβII were performed on archived blood samples from Malaysia and 64 PkβII sequences were obtained. Sequence analysis revealed length polymorphism, and its amino acids at critical residues indicate the ability of PkβII to mediate P. knowlesi invasion into monkey erythrocytes. Low genetic diversity (π = 0.007) was observed in the PkβII of Malaysia Borneo compared to Peninsular Malaysia (π = 0.015). The PkβII was found to be under strong purifying selection to retain infectivity in monkeys and it plays a limited role in the zoonotic potential of P. knowlesi. Its haplotypes could be clustered into Peninsular Malaysia and Malaysia Borneo groups, indicating the existence of two distinct P. knowlesi parasites in Malaysia as reported in an earlier study.
    Matched MeSH terms: Borneo
  16. Fulltext Malagasy Genetic Ancestry Comes from an Historical Malay Trading Post in Southeast Borneo
    Brucato N, Kusuma P, Cox MP, Pierron D, Purnomo GA, Adelaar A, et al.
    Mol Biol Evol, 2016 09;33(9):2396-400.
    PMID: 27381999 DOI: 10.1093/molbev/msw117
    Malagasy genetic diversity results from an exceptional protoglobalization process that took place over a thousand years ago across the Indian Ocean. Previous efforts to locate the Asian origin of Malagasy highlighted Borneo broadly as a potential source, but so far no firm source populations were identified. Here, we have generated genome-wide data from two Southeast Borneo populations, the Banjar and the Ngaju, together with published data from populations across the Indian Ocean region. We find strong support for an origin of the Asian ancestry of Malagasy among the Banjar. This group emerged from the long-standing presence of a Malay Empire trading post in Southeast Borneo, which favored admixture between the Malay and an autochthonous Borneo group, the Ma'anyan. Reconciling genetic, historical, and linguistic data, we show that the Banjar, in Malay-led voyages, were the most probable Asian source among the analyzed groups in the founding of the Malagasy gene pool.
    Matched MeSH terms: Borneo
  17. Description of the final instar larva of Orthetrum borneense Kimmins, 1936 (Odonata, Libellulidae), using rearing and molecular methods
    Steinhoff PO, Butler SG, Dow RA
    Zootaxa, 2016 Feb 18;4083(1):99-108.
    PMID: 27394221 DOI: 10.11646/zootaxa.4083.1.5
    The final instar larva of Orthetrum borneense Kimmins, 1936, is described and figured for the first time based on exuviae from three male and six female larvae collected in Sarawak, Borneo (East Malaysia). It is compared with an early instar larva, which was matched to the adult O. borneense by DNA barcoding, and the known larvae of other species of this genus that occur in the region.
    Matched MeSH terms: Borneo
  18. Characterisation of a drug resistant strain of Plasmodium falciparum from Sabah
    Clyde DF, McCarthy VC, Gilman RH, Miller RM
    J Trop Med Hyg, 1973 Sep;76(9):226-30.
    PMID: 4582746
    Matched MeSH terms: Borneo
  19. Endemic goiter in Sarawak, Borneo Island; prevalence and pathogenesis
    Ogihara T, Oki K, Iida Y, Hayashi S
    Endocrinol. Jpn., 1972 Jun;19(3):285-93.
    PMID: 4117947
    Matched MeSH terms: Borneo
  20. Serum thyrotropin levels of natives in Sarawak, Borneo Island
    Ogihara T, Yamamoto T, Fukuchi M, Oki K
    J Clin Endocrinol Metab, 1972 Nov;35(5):711-5.
    PMID: 5071341
    Matched MeSH terms: Borneo
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