[1] Dept Vet Affairs, Mental Illness Res Educ & Clin Ctr, Capitol Hlth Care Network VISN 5, Baltimore, MD 21201 USA
[2] Univ Maryland, Sch Med, Dept Epidemiol & Publ Hlth, Baltimore, MD 21201 USA
[3] Univ Maryland, Sch Med, Dept Psychiat, Baltimore, MD 21201 USA
[4] New York State Psychiat Inst & Hosp, New York, NY 10032 USA
[5] Columbia Univ, Coll Phys & Surg, Dept Psychiat, New York, NY USA