The following were members of the Evaluate Study Group and contributed patients (number), to the trial:

Mr Jason Abbott, South Cleveland Hospital, Middlesborough (44); Mr Al’samarrai, Princess Alexandra Hospital, Essex (74); Mr Bob Balfour, Princess of Wales Hospital, Mid Glamorgan (99); Mr Colin Bone, Queen Elizabeth Hospital, Norfolk (13); Mr R Callender, Wordsley Hospital, W Midlands (13); Mr James Campbell, St James’s University Hospital, Leeds (4); Mr C Chandler, Billinge Hospital, Wigan (21); Mr Rick Clayton, Bradford Royal Infirmary (33); Dr K Cooper, Aberdeen Royal Infirmary (32); Mr John Day, St. Helier Hospital, Jersey (7); Mr Ellis Downes, Leeds General Infirmary (4); Mr Sean Duffy, St James’s University Hospital, Leeds (2); Dr Peter Fisher, Aberdeen Royal Infirmary (3); Mr J Frappell, Derriford Hospital, Plymouth (16); Mr Mike Gannon, Leeds General Infirmary (24); Mr Ray Garry, St James’s University Hospital, Leeds/South Cleveland, (50); Mr Godfrey, Sunderland General Hospital (1); Mr J K Gupta, University of Birmingham (4); Mr Jed Hawe, South Cleveland Hospital (28); Mr Rob Hawthorn, Southern General Hospital, Glasgow (104); Mr Neil Hebblethwaite, Friarage Hospital, Northallerton (3); Mr Hefni, Benenden Hospital, Kent (78); Mr Chris Kremer, St James’s University Hospital, Leeds (17); Mr Geoff Lane, St James’s University Hospital, Leeds (22); Mr Gavin MacNab, Sunderland General Hospital (71); Mr Sandeep Mane, University Hospital, Cardiff (7); Mr Okolo, North Middlesex Hospital (1); Mr R Penketh, University Hospital, Cardiff (11); Mr Graham Phillips, South Cleveland Hospital (49); Mr K Phillips, Castle Hill Hospital, Cottingham (58); Mr B Ramsay, Peterborough District Hospital (10); Mr Randle, Castle Hill Hospital, Cottingham (59); Mr Mark Roberts, Sunderland District General Hospital (10); Mr Naren Samtaney, Airedale Hospital, Keighley (44); Mr David Sanderson, Colchester General Hospital (75); Mr E Shaxted, Northampton General Hospital (115); Mr R W Stones, Princess Anne Hospital, Southampton (13); Mr Chris Sutton, Royal Surrey County Hospital (3); Mr CC Welch, Basildon Hospital, Essex (9); Mr Mark Whittaker, St James’s University Hospital, Leeds (46); Mr M S Zaklama, Birch Hill Hospital, Rochdale (35); Dr Daponte, Johannesburg Hospital, South Africa (11); Dr P De Jong, University of Cape Town, South Africa (57)