[1] DUKE UNIV, MED CTR, DEPT PSYCHIAT & BEHAV SCI, DEV EPIDEMIOL PROGRAM, DURHAM, NC USA
[2] UNIV PITTSBURGH, WESTERN PSYCHIAT INST & CLIN, LIFE HIST STUDIES PROGRAM, PITTSBURGH, PA 15260 USA
[3] UNIV PITTSBURGH, PITTSBURGH YOUTH STUDY, PITTSBURGH, PA 15260 USA