[1] Teaching Hospital of the Paracelsus Medical University Salzburg,Department of Orthopedic Surgery, Ordensklinikum Barmherzige Schwestern Linz, Vinzenzgruppe Center of Orthopedic Excellence, 4020 Linz
[2] Clinic Diakonissen Schladming,Department of Orthopedic and Trauma Surgery
[3] Universitätsklinik Balgrist,Department of Orthopaedic Surgery
[4] University of Applied Sciences Upper Austria,Department of Marketing and Electronic Business