1. Pathology Unit, Department of Medical and Surgical SciencesUniversity of Cantabria and IDIVAL Research Institute Santander Spain
2. Radiodiagnosis ServiceMarqués de Valdecilla University Hospital Santander Spain
3. Gastroenterology and Hepathology ServiceMarqués de Valdecilla University Hospital Santander Spain
4. Anatomical Pathology DepartmentUniversity Hospital Santiago de Compostela Spain
5. Anatomical Pathology Service, Marqués de Valdecilla University HospitalUniversity of Cantabria and IDIVAL Research Institute Santander Spain