1. Section of Infectious Diseases, Yale University School of Medicine, New Haven, Connecticut, USA
2. Department of Communication, University at Albany, State University of New York, Albany, New York, USA
3. Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
4. National Anti-Drug Agency, Ministry of Home Affairs, Kuala Lumpur, Malaysia
5. Division of Epidemiology of Microbial Diseases, Yale University School of Public Health, New Haven, Connecticut, USA