1. Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong
2. Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong
3. Department of Clinical, Neuro and Developmental Psychology, Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, Amsterdam
4. Health Services Research group, IMIM-Institut Hospital Mar d'Investigacions Mèdiques, Universitat Pompeu Fabra, CIBERESP, Barcelona
5. Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong
6. Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong
7. Universitair Psychiatrisch Centrum - Katholieke Universiteit Leuven (UPC-KUL), Campus Gasthuisberg, Leuven
8. Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts