1. Department of Orthopaedics and Traumatology, University of Rome “Tor Vergata”, Italy
2. Department of Physical and Rehabilitation Medicine, School of Medicine, University of Rome “Tor Vergata”, Italy
3. Physical medicine, Rheumatology and rehabilitation department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
4. Head of Department of Orthopaedics and Traumatology, Azienda Ospedaliera San Giovanni di Dio e Ruggi d’Aragona, University of Salerno, Italy; Queen Mary University of London, Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Mile End Hospital, London, UK