1. Department of Endocrinology, Linyi People's Hospital, Linyi, Shandong 276000, P.R. China
2. Department of Pediatrics, Linyi People's Hospital, Linyi, Shandong 276000, P.R. China
3. Department of Medicine, Linyi Luozhuang Central Hospital, Linyi, Shandong 276000, P.R. China
4. Department of Medicine, People's Hospital of Linyi High‑Tech Industrial Development Zone, Linyi, Shandong 276000, P.R. China