Clinical Epidemiology Group, UCL, London, United Kingdom
Beatson West of Scotland Cancer Centre, Glasgow, United Kingdom
St James's University Hospital, Leeds, West Yorkshire, United Kingdom
Ninewells Hospital, Dundee, United Kingdom
Bristol Royal Infirmary, Bristol, United Kingdom
Birmingham Heartlands, Birmingham, United Kingdom
Addenbrooke's Hospital, Cambridge, United Kingdom
University College Hospital, London, United Kingdom
King's College Hospital, London, United Kingdom
Maidstone Hospital, Maidstone, United Kingdom
UCL Cancer Trials Centre, London, United Kingdom
Royal Derby Hospital, Derby, United Kingdom
Pilgrim Hospital, Boston, United Kingdom
The Clatterbridge Cancer Centre, Wirral, United Kingdom
The Clatterbridge Cancer Centre NHS Foundation Trust, Bebington, Wirral, United Kingdom
Leeds Teaching Hospitals NHS Trust, Leeds, West Yorkshire, United Kingdom
University Hospitals of Bristol NHS Foundation Trust, Bristol, United Kingdom
University College London, London, United Kingdom
Whittington Hospital NHS Trust, London, United Kingdom