1. Department of Orthopaedics, RWTH University Clinic Aachen, Aachen, Germany, Pauwelsstraβe 30, 52074 Aachen
2. Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi (SA), Italy
3. School of Pharmacy and Bioengineering, Keele University School of Medicine, Thornburrow Drive, Stoke on Trent, England
4. 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
5. University of Toronto Orthopaedic Sports Medicine Program (UTOSM), Women’s College Hospital, 76 Grenville St, Toronto, ON, Canada
6. Department of Orthopaedics, El Hadara University Hospital Lambroso, Alexandria, Egypt