1. Department of Public Health and Primary Care; School of Clinical Medicine; University of Cambridge; Cambridgeshire United Kingdom
2. Department of Medical Research; Taichung Veterans General Hospital; Taichung Taiwan
3. Department of Psychiatry; Taichung Veterans General Hospital; Taichung Taiwan
4. Department of Neuropsychiatry; Graduate School of Medicine; University of Tokyo; Tokyo Japan
5. Department of Psychiatry; Changhua Christian Hospital; Changhua Taiwan
6. Department of Psychiatry; Faculty of Medicine; National Yang-Ming University; Taipei Taiwan
7. Department of Psychiatry and Behavioral Sciences; School of Medicine, Johns Hopkins University; Baltimore Maryland