Bristol Haematology and Oncology Centre, Bristol, United Kingdom
Southampton General Hospital, Southampton, United Kingdom
Royal Marsden Hospital, Sutton, United Kingdom
Royal Preston Hospital, Preston, Lancashire, United Kingdom
Leeds General Infirmary, Leeds, United Kingdom
Ninewells Hospital, Dundee, United Kingdom
Royal Sussex County Hospital, Brighton, Sussex, United Kingdom
Papworth Hospital, Cambridge, United Kingdom
Blackpool Victoria Hospital, Blackpool, United Kingdom
University College London Hospital, London, United Kingdom
Hammersmith Hospital, London, United Kingdom
The Christie Hospital, Manchester, United Kingdom
Whittington Hospital NHS Trust, London, United Kingdom
University College London Hospitals NHS Foundation Trust, London, United Kingdom
Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
Clinical Epidemiology Group, University College London, London, United Kingdom
Birmingham Heartlands Hospital, Birmingham, United Kingdom
Bristol Royal Hospital for Children, Bristol, United Kingdom
Addenbrooke's Hospital, Cambridge, United Kingdom
St Bartholomew's Hospital, London, Greater London, United Kingdom
The Christie NHS Foundation Trust, Manchester, Greater Manchester, United Kingdom
University College London Hospital, London, Greater London, United Kingdom
Medizinische Hochschule, Hannover, Germany
University College London Hospital, London, United Kingdom
Hospital for Children and Adolescents III, Goethe University, Frankfurt, Germany
University College London, London, England, United Kingdom