1. Department of Surgery, Bristol Royal Infirmary, Bristol BS2 8HW
2. Department of Oesophagogastric Surgery, Gloucestershire Royal Hospital, Gloucester
3. Histopathology, Gloucestershire Cellular Pathology Laboratory, Cheltenham General Hospital, Cheltenham, Gloucestershire
4. Surgery in the Department of Oesophagogastric Surgery, Gloucestershire Royal Hospital, Gloucester