1. Department of Orthopedics, The Affiliated Second Hospital of Soochow University, Suzhou, Jiangsu 215000, P.R. China
2. Department of General Surgery, The First Affiliated Hospital of Nantong University, Nantong, Jiangsu 225001, P.R. China
3. Department of Emergency, The First Affiliated Hospital of Nantong University, Nantong, Jiangsu 225001, P.R. China