Please note, the trial is no longer open to recruitment. The following hospital sites took part in the study.

	Queen Elizabeth Hospital Birmingham	Russell's Hall Hospital, Dudley
	Birmingham Heartlands Hospital	Royal Free Hospital, London
	Royal Victoria Hospital, Belfast	University Hospital Coventry & Warwickshire
	St Mary's Hospital, London	Craigavon Area Hospital
	Charing Cross Hospital	Leeds General Infirmary
	Hammersmith Hospital	York Hospital
	University College Hospital London	Rotherham General Hospital
	Queen Medical Centre, Nottingham	Addenbrooke's Hospital
	St Thomas' Hospital	Royal Sussex Country Hospital, Brighton
	Musgrove Park Hospital	Northampton General Hospital
	Sunderland Royal Hospital	Aberdeen Royal Infirmary
	Bristol Royal Infirmary	Glasgow Queen Elizabeth Hospital
	Dorset County Hospital	Hull Royal Infirmary
	Royal Cornwall Hospital	St George's Hospital, London
	Derriford Hospital, Plymouth	Royal Victoria Infirmary, Newcastle-upon-Tyne
	Queen Alexandra Hospital, Portsmouth
	The Royal Liverpool University Hospital
	King's College Hospital London