1. Department of Nephrology, Peking University People’s Hospital, Beijing, China
2. Department of Nephrology, Miyun Hospital, Beijing, China
3. Department of Nephrology, Shijingshan Hospital, Beijing, China
4. Department of Nephrology, Peking University International Hospital, Beijing, China
5. Department of Nephrology, Capital Medical University Affiliated Luhe Hospital, Beijing, China
6. Department of Nephrology, Aviation General Hospital, Beijing, China
7. Department of Nephrology, Zhanlanlu Hospital of Xicheng District, Beijing, China
8. Jiaozhou Bethune Blood Purification Center, Shandong, China
9. Department of Nephrology, Beijing Boai Hospital, China Rehabilitation Research Center, Beijing, China