1. Department of Psychiatry; Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
2. Thanyarak Institute on Drug Abuse; Department of Medical Service; Ministry of Public Health; Pathumtani Thailand
3. Department of Psychiatry; Yale School of Medicine; New Haven CT USA
4. Center of Excellence in Molecular Genetics of Cancer and Human Diseases; Department of Anatomy; Faculty of Medicine; Chulalongkorn University; Bangkok Thailand