[1] Univ Malaya, Fac Med, Dept Med, Kuala Lumpur, Malaysia
[2] Univ Malaya, Fac Med, Dept Social & Prevent Med, Kuala Lumpur, Malaysia
[3] Yale Sch Med, Dept Internal Med, Sect Infect Dis, New Haven, CT USA
[4] Yale Sch Publ Hlth, Div Epidemiol Microbial Dis, New Haven, CT USA
[5] Yale Univ, Ctr Interdisciplinary Res AIDS, New Haven, CT USA
[6] Univ Malaya, Fac Med, Ctr Excellence Res AIDS CERiA, Kuala Lumpur, Malaysia
[7] Univ Connecticut, Dept Allied Hlth Sci, Storrs, CT USA
[8] Univ Malaya, Fac Comp Sci & Informat Technol, Dept Informat Syst, Kuala Lumpur, Malaysia
[9] Monash Univ Malaysia, Kuala Lumpur, Malaysia
[10] Yale Univ, Sch Nursing, 400 West Campus Dr, Orange, CT 06477 USA