[1] Sheppard Pratt Hlth Syst, Stanley Res Program, 6501 North Charles St, Baltimore, MD 21204 USA
[2] Vet Affairs Capitol Hlth Care Network, Vet Integrated Serv Network 5, Mental Illness Res Educ & Clin Ctr, Baltimore, MD 21201 USA
[3] Univ Maryland, Sch Med, Dept Psychiat, Baltimore, MD 21201 USA
[4] Columbia Univ, Sch Med, Dept Psychiat, New York, NY 10032 USA
[5] Johns Hopkins Sch Med, Welch Ctr Prevent Epidemiol & Clin Res, Baltimore, MD 21287 USA
[6] Vet Affairs Pittsburgh Hlth Care Network, Vet Integrated Serv Network 4, Mental Illness Res Educ & Clin Ctr, Pittsburgh, PA 15213 USA
[7] RAND Corp, Pittsburgh, PA 15213 USA