1. Chiang Mai University; Department of Psychiatry, Faculty of Medicine; P.O. Box 102 Amphur Muang Chiang Mai Thailand 50200
2. Chiang Mai University; Department of Psychiatry; PO Box 102 Chiang Mai University Amphur Muang Chiang Mai Thailand 50202
3. Suanprung Psychiatric Hospital; Psichiatry; 131 Changloa Road Amphur Muang Chiang Mai Thailand 50200
4. University of California; Department of Family Medicine; 10880 Wilshire Boulevard, Suite 540 Los Angeles USA CA 90024