1. Department of Nephrology The First Affiliated Hospital of Hainan Medical University Haikou China
2. Department of Orthopedics The First Affiliated Hospital of Hainan Medical University Haikou China
3. Department of Nephrology The First Affiliated Hospital of Xinxiang Medical University Ürümqi China
4. Department of Nephrology Qionghai People's Hospital Qionghai China
5. Blood Purification Center Hannan Affiliated Hospital of Hainan Medical University Haikou China