Vincenzo Ricci1, Kamal Mezian, Levent Özçakar. 1. IRCCS Rizzoli Orthopaedic Institute, Department of Biomedical and Neuromotor Science, Physical and Rehabilitation Medicine Unit, Bologna, Italy Department of Rehabilitation Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey.