1. Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A.
2. Department of Geriatrics, The First Hospital of Jilin University, Changchun 130021, China
3. Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, 37 Guoxue Lane, Chengdu 610041, China
4. Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
5. Pediatic Research Institute, Department of Pediatrics, University of Louisville, Louisville, KY, U.S.A.
6. Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, U.S.A.