Recruitment to the trial has now ended.
The following sites participated in the trial:
Ninewells Hospital and Medical School, Dundee
Queen Elizabeth Hospital, Birmingham
Royal Brompton Hospital, London
University Hospital Llandough, Llandough
Royal Papworth Hospital, Cambridge
Hammersmith Hospital, London
Royal Devon and Exeter Hospital, Exeter
The Princess Alexandra Hospital, Harlow
Belfast City Hospital, Belfast
Wythenshawe Hospital, Manchester
Royal Infirmary of Edinburgh, Edinburgh
Northwick Park Hospital, Harrow
Hospital Clinic, Barcelona
Hospital Trueta, Girona
Hospital German Trias, Badalona
Hospital Universitario Son Espases, Palma
Hospital Universitari de Bellvitge, Barcelona
Hospital Universitari Vall d’Hebron, Barcelona