[1] RWTH Univ Hosp Aachen, Dept Orthopaed Trauma & Reconstruct Surg, D-52064 Aachen, Germany
[2] Acad Hosp Bolzano SABES ASDAA, Dept Orthopaed & Trauma Surg, I-39100 Bolzano, Italy
[3] Indraprastha Apollo Hosp, Dept Orthoped, Inst Orthopaed, New Delhi, India
[4] Oberlinhaus, Dept Spine Surg, D-14482 Potsdam, Germany
[5] Univ Witten Herdecke, Dept Med & Dent, D-58455 Witten, Germany
[6] RWTH Univ Hosp Aachen, Dept Arthroscopy & Joint Replacement, MVZ Praxisklin Orthopadie Aachen, D-52074 Aachen, Germany
[7] Eifelklin St Brigida, Dept Orthoped, Simmerath, Germany
[8] Univ Salerno, Dept Med Surg & Dent, I-84081 Baronissi, Italy
[9] Queen Mary Univ London, Mile End Hosp, Barts & London Sch Med & Dent, London E1 4DG, England
[10] Keele Univ, Sch Pharm & Bioengn, Fac Med, Keele, England