1. Division of Nephrology, The Second Hospital of Jilin University, Changchun, China
2. Division of Nephrology, The First Hospital of Jilin University-the Eastern Division, Changchun, China
3. Division of Nephrology, Xing’anmeng people’s Hospital, Ulan Hot, China
4. Division of Nephrology, Jilin FAW General Hospital, Changchun, China
5. Division of Nephrology, Jilin City Central Hospital, Jilin, China