1 Department of Trauma and Orthopaedic Surgery, Azienda Ospedaliera Universitaria, San Giovanni di Dio e Ruggi D'Aragona, Via San Leonardo 1, Salerno 84131, Italy.
2 Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, Baronissi, SA 84081, Italy.
4 Department of Biomedical Sciences for Health, University of Milan, Milan, Italy.
5 Queen Mary University of London, Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Mile End Hospital, 275 Bancroft Road, London E1 4DG, England.
6 Institute of Science and Technology in Medicine, Keele University School of Medicine, Thornburrow Drive, Stoke-on-Trent ST5 5B, England.