1. Graduate School of Public Health, Department of Behavioral and Community Health Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
2. Center for LGBT Health Research, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
3. Department of Pediatrics, Division of Adolescent and Young Adult Health, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
4. School of Psychological Sciences and Health, University of Strathclyde, Glasgow, Scotland
5. Department of Psychology, University of Florida, Gainesville, Florida, USA
6. Mark S. Friedman Psychotherapy, Pittsburgh, Pennsylvania, USA