Affiliation: | a Department of Gastroenterology, Hospital General de Tomelloso, Tomelloso, Spain b Research Unit, Complejo Hospitalario La Mancha Centro, Alcázar de San Juan, Spain c Department of Pathology, Complejo Hospitalario La Mancha Centro, Alcázar de San Juan, Spain d La Paz Hospital Research Institute-IdiPAZ, Madrid, Spain |