1. Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands
2. Department of Orthopaedics, Tor Vergata University, Rome, Italy
3. Department of Orthopaedic and Trauma Surgery Hospital Antonio Cardarelli, Campobasso, Italy
4. Queen Mary University of London, Centre for Sports and Exercise Medicine, Mile End Hospital, Mann Ward, London, England; Department of Musculoskeletal Disorders, University of Sabino School of Medicine and Surgery, Sabino, Italy