1. Nursing Department, Peking University Third Hospital, Beijing, China
2. Renal Department, Peking University International Hospital, Beijing, China
3. Renal Department, Peking University Third Hospital, Beijing, China
4. Hemodialysis Center, Fengtai Hospital of Integrated Traditional Chinese and Western Medicine, Beijing, China
5. Renal Department, Haidian Hospital, Beijing, China
6. Renal Department, Peking University Third Hospital Yanqing Hospital, Beijing, China
7. Department of Nephrology, Fuxing Hospital, The Eighth Clinical Medical College, Capital Medical University, Beijing, China