[1] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA
[2] SUNY Stony Brook, Dept Psychiat, Stony Brook, NY 11794 USA
[3] SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA
[4] SUNY Stony Brook, Dept Comp Sci, Stony Brook, NY 11794 USA
[5] NYU, Dept Psychiat, New York, NY 10016 USA
[6] Nathan S Kline Inst Psychiat Res, Orangeburg, NY 10962 USA