1. Guy’s and St Thomas’ Oesophago-gastric Centre , London , UK
2. School of Sports and Exercise Sciences, Liverpool John Moore’s University , Liverpool , UK
3. Centre for Health and Human Performance , London , UK
4. Faculty of Education Health and Wellbeing, University of Wolverhampton, Wolverhampton, UK
5. School of Cancer and Pharmaceutical, King’s College London , London , UK
6. Department of Oncology, Maidstone and Tunbridge Wells NHS Trust Hospitals , Maidstone , UK
7. Department of Molecular Medicine and Surgery, Karolinska Institutet , Stockholm , Sweden