1. University of North Carolina Project-China, Guangzhou, China
2. Dermatology Hospital of Southern Medical University, Guangzhou, China
3. Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
4. Project X, Singapore, Singapore
5. Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
6. School of Social Work, Columbia University, New York, NY, USA