1. Cancer Research Program, IMIM, Hospital del Mar Medical Research Institute, Unidad Asociade CSIC, Barcelona, Spain
2. Department of Gastroenterology, Universidad Autonoma de Barcelona, Hospital del Mar, Barcelona, Spain
3. Department of Medical Oncology, Hospital del Mar, Barcelona, Spain
4. Department of Pathology, Universidad Autonoma de Barcelona, Hospital del Mar, CIBERONC, Barcelona, Spain
5. Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
6. Department of General Surgery, University of Heidelberg, Heidelberg, Germany
7. Department of Medical Oncology, Ramon y Cajal University Hospital, CIBERONC, IRYCIS, Alcala University, Madrid, Spain
8. Institute of Biomedical Research of Barcelona (IIBB-CSIC), Barcelona, Spain