1. Department of Psychiatry, Penang Medical College, Penang,
Malaysia
2. Department of Public Health Medicine, Penang Medical
College, Penang, Malaysia, .;
3. Health Research Development Unit, Faculty of Medicine,
University of Malaya, Kuala Lumpur, Malaysia
4. Department of Statistics, Faculty of Science and Technology,
National University of Malaysia, Bangi, Malaysia
5. Royal Adelaide Hospital, Adelaide, Australia
6. Department of Psychology, Middlesex University, London,
United Kingdom
7. Department of Psychiatry, Faculty of Medicine, National
University of Malaysia, Kuala Lumpur, Malaysia
8. Nutrition and Public Health Intervention Research Unit,
London School of Hygiene and Tropical Medicine, London, United Kingdom