1. Division of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
2. Department of Mechanical Engineering, McGill University, Montreal, QC H3A0C3, Canada
3. Department of Orthopedics, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, People’s Republic of China