[1] Woodbridge Hosp, Inst Mental Hlth, Dept Gen Psychiat 1, Singapore 539747, Singapore
[2] Woodbridge Hosp, Inst Mental Hlth, Div Res, Singapore 539747, Singapore
[3] Duke Natl Univ Singapore, Grad Sch Med, Off Clin Sci, Singapore, Singapore
[4] Duke Natl Univ Singapore, Grad Sch Med, Canc & Stem Cell Biol Program, Singapore, Singapore
[5] Natl Canc Ctr Singapore, Dept Med Oncol, Singapore, Singapore
[6] Natl Univ Singapore, Yong Loo Lin Sch Med, Dept Epidemiol & Publ Hlth, Singapore 117595, Singapore
[7] Woodbridge Hosp, Inst Mental Hlth, Dept Early Psychosis Intervent, Singapore 539747, Singapore
[8] Natl Univ Hlth Syst, Dept Pharmacol, Yong Loo Lin Sch Med, Singapore, Singapore
[9] Duke Natl Univ Singapore, Grad Sch Med, Neurosci & Behav Disorders Program, Singapore, Singapore