1. Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
2. Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK
3. School of Psychology, Newcastle University, Newcastle upon Tyne, UK
4. Faculty of Behavioural, Management and Social Sciences, Department of Health Technology and Services Research, University of Twente, Enschede, Netherlands
5. Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
6. Department of Paediatric and Adolescent Haematology and Oncology, Great North Children’s Hospital, Newcastle upon Tyne, UK