∗Research Division, Institute of Mental Health, Singapore

†Ambulatory Services/Nursing, Institute of Mental Health, Singapore

‡West Region, Institute of Mental Health, Singapore

§Yong Loo Lin School of Medicine, National University of Singapore, Singapore

∥Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.

Send reprint requests to Kang Sim, MMed(Psychiatry), Research Division, Institute of Mental Health/Woodbridge Hospital, 10, Buangkok View, Singapore 539747. E-mail: [email protected].