1. Glasgow Royal Infirmary, 84, Castle
Street, Glasgow, G4 0SF, UK.
2. Royal Orthopaedic Hospital, Bristol
Road South, Northfield, Birmingham, B31
2AP, UK.
3. Vanderbilt Orthopaedic Institute, 1215
21st Avenue South, Medical Center East, S
Tower, Suite 4200, Nashville, Tennessee, 37232-8774, USA.