1. Department of Orthopaedic and Trauma Surgery, Campus Bio-Medico University, Via Alvaro del Portillo 200, Trigoria, 00128 Rome, Italy
2. Integrated Research Centre, Campus Bio-Medico University, Via Alvaro del Portillo 21, 00128 Rome, Italy
3. Centre for Sports and Exercise Medicine, Mile End Hospital, Barts and The London School of Medicine and Dentistry, 275 Bancroft Road, London E1 4DG, UK