1. Department of Nephrology, Tianjin Hospital, Tianjin, P.R. China
2. Department of Emergency, Tianjin Hospital, Tianjin, P.R. China
3. Tianjin Women’s and Children’s Health Center, Tianjin Hospital, Tianjin, P.R. China
4. Department of Orthopaedics, Tianjin Hospital, Tianjin, P.R. China
5. Department of Cardiology, Tianjin First Central Hospital, Tianjin, P.R. China