1. Department of Medicine, Clinical School, International Medical University, Jalan Rasah, Negeri Sembilan, 70400 Seremban, Malaysia
2. PT Foundation, 7C-1, Jalan Ipoh Kecil, Off Jalan Raja Laut, P.O. Box 11859, 50350 Kuala Lumpur, Malaysia
3. The Center of Excellence for Research in AIDS (CERiA), University of Malaya Infectious Diseases Unit, University of Malaya Medical Centre, Lembah Pantai, 59100 Kuala Lumpur, Malaysia