[1] Univ Autonoma Madrid UAM, Inst Invest Sanitaria Princesa IIS Princesa, Hosp Univ La Princesa, Dept Gastroenterol, Madrid, Spain
[2] CIBEREHD, Madrid, Spain
[3] IDIBAPS, Hosp Clin & Prov, Dept Gastroenterol, Barcelona, Spain
[4] CIBEREHD, Barcelona, Spain
[5] Hosp Univ Marques Valdecilla, Dept Gastroenterol, Santander, Spain
[6] IDIVAL, Santander, Spain
[7] Hosp Univ Ramon y Cajal, Dept Gastroenterol, Madrid, Spain
[8] Complejo Asistencial Univ Leon, Dept Gastroenterol, Leon, Spain
[9] Hosp Clin Univ Santiago de Compostela, Dept Gastroenterol, Santiago De Compostela, Spain
[10] Inst Invest Sanitaria Santiago de Compostela IDIS, Santiago De Compostela, Spain
[11] Hosp Univ Virgen de las Nieves, Dept Gastroenterol, Granada, Spain
[12] Hosp Univ Cent Asturias, Dept Gastroenterol, Oviedo, Spain
[13] ISPA, Oviedo, Spain
[14] Hosp Univ Cabuenes, Dept Gastroenterol, Gijon, Spain
[15] Hosp Univ & Politecn La Fe, Dept Gastroenterol, Valencia, Spain
[16] CIBEREHD, Valencia, Spain
[17] Hosp Univ Canarias, Dept Gastroenterol, San Cristobal la Laguna, Spain
[18] Hosp Univ Virgen del Rocio, Dept Gastroenterol, Seville, Spain
[19] Hosp HUA Alava, Dept Gastroenterol, Vitoria, Spain
[20] Hosp Univ Gran Canaria Dr Negrin, Dept Gastroenterol, Las Palmas Gran Canaria, Spain
[21] Hosp Gen Univ Ciudad Real, Dept Gastroenterol, Ciudad Real, Spain
[22] Hosp Gen Univ Dr Balmis, Dept Gastroenterol, Alicante, Spain
[23] CIBEREHD, Alicante, Spain
[24] Hosp Clin Valladolid, Dept Gastroenterol, Valladolid, Spain
[25] Hosp Univ Fuenlabrada, Dept Gastroenterol, Madrid, Spain
[26] Inst Invest Hosp Univ La Paz IdiPAZ, Madrid, Spain
[27] Hosp Univ Girona Dr Josep Trueta, Dept Gastroenterol, Girona, Spain
[28] Hosp Gen Univ Castellon, Dept Gastroenterol, Castellon de La Plana, Spain
[29] Hosp Gen San Jorge, Dept Gastroenterol, Huesca, Spain
[30] Hosp Univ Gregorio Maranon, Dept Gastroenterol, IiSGM, Madrid, Spain
[31] Univ Complutense Madrid, Madrid, Spain
[32] Hosp Univ Basurto, Dept Gastroenterol, Bilbao, Spain
[33] Hosp Univ Bellvitge, Dept Gastroenterol, Barcelona, Spain
[34] Hosp Univ Miguel Servet, Dept Gastroenterol, Zaragoza, Spain
[35] Hosp Univ Rio Hortega, Dept Gastroenterol, Valladolid, Spain
[36] Hosp Univ Parc Tauli, Dept Gastroenterol, Sabadell, Spain
[37] CIBEREHD, Barcelona, Spain
[38] Univ Pais Vasco UPV EHU, Biodonostia Hlth Res Inst, Hosp Univ Donostia, Dept Gastroenterol, Donostia San Sebastian, Spain
[39] CIBEREHD, Donostia San Sebastian, Spain
[40] Hosp Badalona Germans Trias & Pujol, Dept Gastroenterol, Badalona, Spain
[41] CIBEREHD, Badalona, Spain
[42] Inst Invest Sanitaria Aragon IIS Aragon, Hosp Clin Univ Lozano Blesa, Dept Gastroenterol, Zaragoza, Spain
[43] CIBEREHD, Zaragoza, Spain
[44] Hosp Univ Infanta Sofia, Dept Gastroenterol, Madrid, Spain
[45] Inst Invest Sanitaria BioBizkaia, Hosp Univ Galdakao, Dept Gastroenterol, Vizcaya, Spain
[46] Hosp Univ Henares, Dept Gastroenterol, Madrid, Spain
[47] Hosp Univ Burgos, Dept Gastroenterol, Burgos, Spain
[48] Parc Sanitari Sant Joan Deu, Dept Gastroenterol, Sant Boi De Llobregat, Spain
[49] Hosp Univ Nuestra Senora Candelaria, Dept Gastroenterol, Santa Cruz De Tenerife, CA, Spain
[50] Complexo Hosp Univ Pontevedra, Dept Gastroenterol, Pontevedra, Spain