1. Department of Nephrology, the First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou, Zhejiang, P.R. China
2. School of Clinical Medicine, Hangzhou Medical College, Hangzhou, Zhejiang, P.R. China
3. Graduate School, Bengbu Medical College, Bengbu, Anhui, P.R. China