Rebecca C Thurston1,2,3, Elizabeth Miller4,5. 1. Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania. 2. Department of Psychology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania. 3. Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania. 4. Division of Adolescent and Young Adult Medicine, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania. 5. Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.