1. Department of Cell Biology and Physiology (J.L.), University of Pittsburgh, Pittsburgh, Pennsylvania 15261;
2. Department of Pathology (F.R.L), The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China;
3. State Key Laboratory of Reproductive Medicine (F.R.L., Y.D., A.Z.Z.), The Center of Metabolic Disease Research, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
4. Department of Endocrinology (D.W.), The Second People's Hospital of Chengdu, Chengdu 610017, China;
5. Surgery (W.J.), West China Hospital, Sichuan University, Chengdu 610041, China;
6. Department of Medicine (J.X.K.), Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114;
7. Division of Endocrinology and Metabolism (M.S.-R.), University of Pittsburgh, Pittsburgh, Pennsylvania 15261;