1. Department of Endocrinology, NHC Key Laboratory of Endocrinology, Peking Union Medical College Hospital; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing China
2. Department of Nutrition; Harvard T. H. Chan School of Public Health, Harvard University; Boston Massachusetts USA
3. Department of Epidemiology; Capital Institute of Pediatrics; Beijing China
4. Department of Endocrinology; Beijing Chaoyang Hospital, Capital Medical University; Beijing China
5. Division of Endocrinology, The Children’s Hospital of Philadelphia, Perelman School of Medicine; University of Pennsylvania; Philadelphia Pennsylvania USA