[1] Garvan Inst Med Res, Program Med Neurobiol, Sydney, NSW, Australia
[2] Univ New S Wales, Sch Psychiat, Sydney, NSW 2036, Australia
[3] Prince Henry Hosp, Mood Disorders Unit, Sydney, NSW, Australia
[4] Merck Res Labs, W Point, PA USA
[5] Macquarie Univ, Sch Biol Sci, Sydney, NSW 2109, Australia
[6] Univ Nottingham, Div Genet, Nottingham NG7 2RD, England
[7] NIMH, Bethesda, MD 20892 USA