1. The Stavros Niarchos Foundation Complex Joint Reconstruction Center, Hospital for Special Surgery, New York, NY, USA
2. 4th Orthopaedic Department, Hospital KAT, Athens, Greece
3. Weill Cornell Medical College, New York, NY, USA
4. HKF Zentrum, ATOS Klinik, Heidelberg, Germany
5. Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY, USA
6. 2nd Orthopaedic Department, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece