1 Digestive Disease Clinical Unit and CIBERehd, Institute of Biomedicine of Seville (IBiS), SeLiver Group, Virgen del Rocío Hospital/CSIC/US, Seville, Spain.
2 Saint Luke's General Hospital, Kilkenny, Ireland.
3 Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville, Spain.