1. 7th Department of Orthopaedic Surgery, Henry Dunant Hospital Center, Athens, Greece
2. 4th Department of Orthopaedic Surgery and Traumatology, KAT Attica General Hospital, Athens, Greece
3. 2nd Department of Orthopaedic Surgery and Traumatology, KAT Attica General Hospital, Athens, Greece
4. 1st Orthopaedic Department, Gennimatas General Hospital, Athens, Greece