1 Department of Community Medicine & Public Health, Faculty of Medicine & Health Sciences, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia. wlcheah@unimas.my
2 Department of Urology, Sarawak General Hospital, Sarawak, Malaysia
3 Medical Education Unit, Faculty of Medicine & Health Sciences, Universiti Malaysia Sarawak, Sarawak, Malaysia