1. Cardiff University, School of Healthcare Sciences, Cardiff, Wales CF24 OAB, UK
2. Velindre University NHS Trust, Cardiff, Wales CF15 7QZ, UK
3. Macmillan Survivorship Research Group, University of Southampton, England SO17 1BJ, UK
4. National Institute for Health Research (NIHR), Cancer & Nutrition Collaborative, Level E, Lab & Path Block (MP113), Southampton General Hospital, Tremona Road, Southampton SO16 6YD, UK
5. National Institute for Health Research (NIHR), Biomedical Research center, The Royal Marsden NHS Foundation Trust and The Institute of Cancer Research, 123 Old Brompton Road, London SW7 3RP, UK