1. Nuffield Orthopaedic Centre, Oxford
University Hospitals Foundation Trust, Windmill Road, Oxford
OX3 7HE, UK.
2. Joint Implant Surgeons, 7277 Smith’s
Mill Road, New Albany, OH
34054, USA.
3. Sint Maartenskliniek, Postbus 8000, 3440
JD Woerden, The Netherlands.