Yujue Li1, Xueyang Tang2, Xijie Yu3. 1. Department of Endocrinology and Metabolism, Laboratory of Endocrinology and Metabolism, Rare Disease Center, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Department of General Practice, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China. 2. Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China. 3. Department of Endocrinology and Metabolism, Laboratory of Endocrinology and Metabolism, Rare Disease Center, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China. Electronic address: xijieyu@hotmail.com.