1. Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
2. Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania3Sanford Burnham Medical Research Institute, Florida Hospital Translational Research Institute, Orlando
3. Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania5Department of Biostatistics, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania
4. Department of Psychiatry, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania7School of Nursing, Duquesne University, Pittsburgh, Pennsylvania
5. Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina
6. Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
7. Department of Health and Physical Activity, University of Pittsburgh, Pittsburgh, Pennsylvania