[1] Hosp Clin Univ San Carlos, Res Inst Hosp Clin San Carlos IdISSC, Dept Gastroenterol, Inflammatory Bowel Dis Unit, Madrid, Spain
[2] Complexo Hosp Univ Pontevedra, Galicia Hlth Res Inst IISGS, Dept Gastroenterol, Inflammatory Bowel Dis Unit, Pontevedra, Spain
[3] Pfizer SLU Alcobendas, Med Dept, Madrid, Spain
[4] Hosp Vithas Virgen Consuelo, Inflammatory Bowel Dis Unit, Carrer Callosa En Sarria 12, Valencia 46007, Spain