[1] VA Connecticut Healthcare Syst, Psychiat Serv 116A, Schizophrenia Biol Res Ctr, West Haven, CT 06516 USA
[2] Connecticut Mental Hlth Ctr, Abraham Ribicoff Res Facil, New Haven, CT 06519 USA
[3] Yale Univ, Sch Med, Dept Psychiat, New Haven, CT USA
[4] Yale Univ, Dept Epidemiol & Publ Hlth, Div Biostat, New Haven, CT 06520 USA
[5] Columbia Univ, Coll Phys & Surg, Dept Psychiat, New York, NY USA
[6] Nathan S Kline Inst Psychiat Res, Orangeburg, NY USA