[1] Univ Pittsburgh, Western Psychiat Inst & Clin 1098, Pittsburgh, PA 15213 USA
[2] Hlth S Harmarville Rehabil Hosp, Pittsburgh, PA USA
[3] Johns Hopkins Med Inst, Baltimore, MD 21205 USA
[4] Henry Ford Hlth Syst, Dept Psychiat, Detroit, MI USA
[5] Henry Ford Hlth Syst, Dept Neurol, Detroit, MI USA
[6] Univ Pittsburgh, Dept Psychiat, Pittsburgh, PA USA
[7] Univ Pittsburgh, Dept Epidemiol, Pittsburgh, PA USA
[8] Univ Pittsburgh, Dept Neurol, Pittsburgh, PA USA