1. Department of Orthopedic Surgery, Chungnam National University School of Medicine, Daejeon, Korea.
2. Department of Emergency and Critical Care Medicine, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon, Korea.
3. Department of Orthopedic Surgery, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon, Korea.