1. ASEAN Institute for Health Development, Mahidol University, Salaya, Phutthamonthon 73170, Thailand
2. Department of Psychology, University of Limpopo, Turfloop Campus, Private Bag X1106, Sovenga 0727, South Africa
3. HIV/AIDS, STIS and TB (HAST), Human Sciences Research Council, Private Bag X41, Pretoria 0001, South Africa