1. Department of Psychiatry, Faculty of Medicine, Thammasat University, Pathumthani, Thailand
2. National Addictions Centre, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
3. Department of Clinical Epidemiology, Faculty of Medicine, Thammasat University, Pathumthani, Thailand
4. Center of Excellence in Applied Epidemiology, Thammasat University, Pathumthani, Thailand