1. Division of Endocrinology, State University of New York-Downstate Medical Center, Kings County Hospital Center, 450 Clarkson Avenue, Box 50, Brooklyn, NY 11203, USA
2. SUNY Downstate Medical Center, Brooklyn, NY 11203, USA
3. University of Missouri-Columbia, Columbia, MO 65212, USA
4. New York University, New York, NY 10012, USA
5. North Shore University Hospital, Manhasset, NY 11714, USA
6. Department of Medicine, SUNY Downstate, Brooklyn, NY 11203, USA