University College London Hospitals NHS Foundation Trust, London, United Kingdom
Hospital Universitari Vall Hebrón, Barcelona, Spain
Manchester Royal Infirmary, Manchester University NHS Foundation Trust,, Manchester, United Kingdom
Hospital Vall d'Hebron, Barcelona, Spain
Hospital Nino Jesus, Madrid, Spain
Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States
University of Miami, Miami, Florida, United States
University College London Hospitals NHS Foundation Trust, London, United Kingdom
St David's South Austin Medical Center, Austin, Texas, United States
Manchester Royal Infirmary Hospital, Manchester, United Kingdom
Vall d'Hebron Institute of Oncology, Barcelona, Spain
Queen Elizabeth University Hospital, Glasgow, United Kingdom
University College London Hospitals NHS Foundation Trust, London, United Kingdom
Royal Manchester Children's Hospital, Manchester, United Kingdom
Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
University College London Hospitals NHS Foundation Trust, London, United Kingdom
The Beatson West of Scotland Cancer Centre / Queen Elizabeth University Hospital, Glasgow, United Kingdom
Freeman Hospital, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
VU University Medical Centre Amsterdam, Amsterdam, Netherlands
University College London Hospitals NHS Foundation Trust, London, United Kingdom
Freeman Hospital, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom