1. Biomedicine Institute of Seville (IBIS); University Hospital Virgen del Rocio; CSIC; University of Seville; Seville Spain
2. Department of Immunology; IBIS; University Hospital Virgen del Rocio; CSIC; University of Seville; Seville Spain
3. Statistics; Methodology and Research Evaluation Unit; Andalusian Public Foundation for Health Research Management in Seville (FISEVI); IBIS; University Hospital Virgen del Rocio; CSIC; University of Seville; Seville Spain
4. Department of Gastroenterology; University Hospital Virgen del Rocio; Seville Spain