1. Department of Musculoskeletal Medicine and Surgery, University of Salerno School of Medicine and Surgery, Salerno, Italy
2. Institute of Science and Technology in Medicine Keele University School of Medicine, Stoke on Trent, England, United Kingdom
3. Centre for Sports and Excercise Medicine, Queen Mary University of London, Barts and the London School of Medicine and Dentistry, Mile End Hospital, London, E1 4DG, England, United Kingdom
4. Whole Life Clinics, London, England, United Kingdom