North Bristol NHS Trust, Bristol, United Kingdom
NHS Greater Glasgow & Clyde, Glasgow, United Kingdom
Nottingham University Hospitals, Nottingham, United Kingdom
Guy's and St. Thomas' Foundation Trust, London, United Kingdom
Royal Free Hospital, London, United Kingdom
Surgical & Interventional Trials Unit, London, United Kingdom
University College London Hospital, London, United Kingdom
UCL, London, United Kingdom
University of Catania, Catania, Italy
Univeristy College London, London, United Kingdom
University College London Hospital, London, United Kingdom
The Christie, Manchester, United Kingdom
Royal Marsden Hospital, Sutton, United Kingdom
Aberdeen Royal Infirmary, Aberdeen, United Kingdom
Royal Free Hospital, London, United Kingdom