Institution: | 1. Cleveland Clinic, Department of Endocrinology, Diabetes, and Metabolism, Cleveland, Ohio;2. University of Arizona College of Medicine-Phoenix, Division of Endocrinology, Department of Medicine, Phoenix, Arizona;3. University of Alabama, Department of Medicine, Division of Endocrinology, Birmingham, Alabama;4. Harvard Vanguard Medical Associates/Atrius Health, and Harvard Medical School, Boston, Massachusetts |