1. Institute of Biopathology and Regenerative Medicine (IBIMER), Granada University, Granada, Spain
2. Department of Medicine, Division of Gastroenterology and Hepatology, University of Illinois at Chicago, Chicago, IL, USA
3. Department of Health Sciences, Jaen University, Jaen, Spain
4. Department of Gastroenterology, San Cecilio University Hospital, Granada, Spain
5. Department of Oncology, Virgen de Las Nieves University Hospital, Granada, Spain