1 Inflammatory Bowel Disease Unit, Department of Gastroenterology, Instituto de Investigaciones Biomédicas August Pi i Sunyer, CIBER-EHD, Rosselló 149-153, 08036, Barcelona, Spain.
2 Inflammatory Bowel Disease Unit, Department of Gastroenterology, Instituto de Investigaciones Biomédicas August Pi i Sunyer, CIBER-EHD, Rosselló 149-153, 08036, Barcelona, Spain. [email protected].