1 Department/Graduate Institute of Medical Education and Bioethics, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Psychiatry, National Taiwan University Hospital, Taipei, Taiwan.
2 Taipei City Psychiatric Center, Taipei City Hospital, Taipei City, 110, Taiwan; Institute of Public Health, School of Medicine, National Yang-Ming University, Taipei City, Taiwan. Electronic address: ychen@tpech.gov.tw.