1. Department of Orthopaedic Surgery, Waikato Hospital, Hamilton, New Zealand
2. Department of Plastic, Reconstructive and Hand Surgery, Middlemore Hospital, Otahuhu, Auckland, New Zealand
3. University of Otago, Dunedin, New Zealand
4. Department of Orthopaedic Surgery, Christchurch and Burwood Hospitals, Christchurch, New Zealand