Affiliations 

  • 1 R.W. Armstrong, PhD, MPH. Department of Health and Safety, University of Illinois, Urbana, Illinois 61801, USA
Med J Malaysia, 1984 Dec;39(4):257-63.
PMID: 6544930

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.