1. Royal Infirmary of Edinburgh, Editorin-Chief, Bone & Joint Research, 22 Buckingham Street, London WC2N 6ET, UK
2. Royal Infirmary of Edinburgh, 51 Little France Crescent, Edinburgh, EH16 4SU, UK
3. Department of Orthopaedics and Trauma, University of Edinburgh, Royal Infirmary of Edinburgh, 51 Little France Crescent, Edinburgh, EH16 4SU, UK