[1] Aristotle Univ Thessaloniki, PapaGeorgiou Hosp, Sch Med, Acad Orthopaed Unit, GR-54634 Thessaloniki, Greece
[2] Newcastle Univ, Inst Cellular Med, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, England
[3] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, London W12 0HS, England
[4] Royal Liverpool Univ Hosp, Dept Trauma & Orthopaed, Liverpool L7 8XP, Merseyside, England
[5] Huddersfield Royal Infirm, Dept Trauma & Orthopaed Surg, Huddersfield HD3 3EA, W Yorkshire, England
[6] Aristotle Univ Thessaloniki, Sch Med, GR-54634 Thessaloniki, Greece
[7] Univ Leeds, Sch Med, Acad Dept Trauma & Orthopaed, Leeds Gen Infirm, Leeds LS2 9JT, W Yorkshire, England
[8] Univ Sheffield, Sch Clin Dent, Acad Unit Restorat Dent, Sheffield S10 2TA, S Yorkshire, England
[9] Univ London Imperial Coll Sci Technol & Med, Dept Surg & Canc, Div Surg, London W12 0HS, England