[1] RWTH Univ Hosp, Dept Orthopaed Trauma & Reconstruct Surg, D-52074 Aachen, Germany
[2] Acad Hosp Bolzano SABES ASDAA, Dept Orthopaed & Trauma Surg, I-39100 Bolzano, Italy
[3] Univ Salerno, Dept Med Surg & Dent, I-84081 Baronissi, SA, Italy
[4] Eifelklin St Brigida, Dept Orthopaed & Trauma Surg, D-52152 Simmerath, Germany
[5] Keele Univ, Sch Pharm & Bioengn, Fac Med, Stoke On Trent ST4 7QB, Staffs, England
[6] Queen Mary Univ London, Mile End Hosp, Ctr Sports & Exercise Med, Barts & London Sch Med & Dent, 275 Bancroft Rd, London E14DG, England