1Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
2Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
3Research Division, National Institute of Traumatology and Orthopaedics, Rio de Janeiro, Brazil
4Division of Orthopaedic Surgery, Department of Surgery, University of Nevada School of Medicine, Reno, Nevada, USA
5Department of Orthopaedic Surgery, Keck School of Medicine of USC, Los Angeles, California, USA
6Research Service, VA Greater Los Angeles Healthcare System, North Hills, California, USA
7Geriatric Research, Education and Clinical Center, VA Greater Los Angeles Healthcare System, North Hills, California, USA
8Department of Medicine, University of California, Los Angeles, Los Angeles, California, USA
9Department of High Altitude Physiology and Pathology, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, China