1. Department of Orthopaedic Surgery Harvard Combined Orthopaedic Residency Program (HCORP) Massachusetts General Hospital Boston Massachusetts USA
2. Department of Orthopaedic Surgery Leiden University Medical Center Leiden The Netherlands
3. Department of Orthopaedic Surgery Joint Research OLVG Amsterdam Amsterdam The Netherlands
4. Department of Orthopaedic Surgery St Antonius Ziekenhuis Nieuwegein The Netherlands