1. Department of Endocrinology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
2. Department of Endocrinology, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
3. Department of Nephrology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China