1. Department of Endocrinology, Ankang Central Hospital, Ankang, Shaanxi 725000, P.R. China
2. Department of Nephropathy, Ankang Central Hospital, Ankang, Shaanxi 725000, P.R. China
3. Department of General Practice, Zhoukou Central Hospital, Zhoukou, Henan 466000, P.R. China
4. Department of Gland Surgery, Ankang Central Hospital, Ankang, Shaanxi 725000, P.R. China