1. Instituto de Biomedicina de Sevilla, IBIS/Hospital Universitario Virgen del Rocío/ Universidad de Sevilla/Consejo Superior de Investigaciones Científicas, Seville, Spain
2. Department of General Surgery, Virgen del Rocío University Hospital, Seville, Spain
3. Department of Pathology, Virgen del Rocío University Hospital, Seville, Spain
4. Present address: HUVR-IBiS Biobank, Virgen del Rocío University Hospital, Seville, Spain
5. Department of Medical Oncology, Virgen del Rocío University Hospital, Seville, Spain
6. Present address: Department of Medical Oncology, 12 of October University Hospital, Madrid, Spain