Charing Cross Hospital, Imperial College London, London, United Kingdom
Royal Brompton Hospital, London, United Kingdom
Burton Hospitals, Burton, United Kingdom
The Pennine Acute Hospitals, Crumpsall, United Kingdom
Hinchinbrooke Hospital, Huntingdon, United Kingdom
Imperial College Healthcare NHS Trust Hammersmith, London, United Kingdom
Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
Derriford Hospital, Plymouth, United Kingdom
St Bartholomew's Hospital, London, United Kingdom
Hammersmith Hospital, London, United Kingdom
NHLI Cardiovascular Sciences, Imperial College London, London, United Kingdom
Imperial Clinical Trials Unit, London, United Kingdom
The Royal Bournemouth Hospital, Bournemouth, United Kingdom
Brighton University Hospital, Brighton, United Kingdom
Coventry University Hospital, Coventry, United Kingdom