[1] Hosp Badalona Germans Trias & Pujol, Serv Aparato Digest, Badalona, Spain
[2] CIBERehd, Badalona, Spain
[3] Univ Cordoba, Inst Maimonides Invest Biomed Cordoba IMIBIC, Hosp Univ Reina Sofia, Unidad Gest Clin Aparato Digest, Cordoba, Spain
[4] Hosp La Fe, Serv Gastroenterol, Valencia, Spain
[5] Univ Alicante, Hosp Gen, Serv Med Digest, Madrid, Spain
[6] Inst Salud Carlos III, CIBEREHD, Madrid, Spain
[7] Hosp Univ Miguel Servet, Serv Gastroenterol, Zaragoza, Spain
[8] Hosp Univ La Paz, Serv Aparato Digest, IdiPaz, Madrid, Spain
[9] Hosp Santa Creu & Sant Pau, Serv Patol Digest, Barcelona, Spain
[10] Hosp Puerta de Hierro, Serv Gastroenterol, Madrid, Spain
[11] Hosp Virgen Macarena, Unidad Gastroenterol, Seville, Spain
[12] Univ Valencia, Hosp Clin Valencia, Serv Med Digest, Valencia, Spain
[13] Hosp Clin San Carlos, Serv Gastroenterol, Madrid, Spain
[14] MSD, Dept Med, Madrid 28027, Spain
[15] Complejo Hosp Univ Santiago, Serv Aparato Digest, Unidad Enfermedad Inflamatoria Intestinal, Santiago De Compostela, Spain