1. Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh DeSoto Street, Pittsburgh,Pennsylvania 15261;
2. Division of Endocrinology, Department of Pediatrics, Children's Hospital and University of Pittsburgh DeSoto Street, Pittsburgh, Pennsylvania 15213;
3. Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh, 3811 O'Hara Street Pittsburgh, Pennsylvania 15261