1. Department of Orthopedic Surgery, Hebei Medical University, Shijiazhuang, Hebei, China (mainland)
2. Medical Research Center, North China University of Science and Technology, Tangshan, Hebei, China (mainland)
3. Department of Orthopedic Surgery, The Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei, China (mainland)
4. Department of Orthopedic Surgery, The Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei, China (mainland)