Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan.|Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan.|Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli County, Taiwan.|Department of Psychiatry, TaipeiVeterans General Hospital, Taipei, Taiwan.|Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan.