1. Department of Gastroenterology, “Virgen de las Nieves” University Hospital, Avenida de las Fuerzas Armadas 2, 18014 Granada, Spain
2. University of Granada, 18010 Granada, Spain
3. Department of Medicine, School of Medicine, University of Granada, 18016 Granada, Spain
4. Biosanitary Institute of Granada (ibs.GRANADA), 18014 Granada, Spain