1. Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu 610041, China
2. Department of Endocrinology and Metabolism, The Second People’s Hospital of Chengdu, Chengdu 610017, China
3. Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA
4. Laboratory of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu 610041, China