1. Centre for Musculoskeletal Outcomes Research, Section of Orthopaedic Surgery, Department of Surgical Sciences, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand
2. Consultant Orthopaedic Surgeon, Dunedin Public Hospital, Southern District Health Board, Great King Street, Dunedin, New Zealand
3. Centre for Biostatistics, Division of Health Sciences, University of Otago, Dunedin, New Zealand