[1] Univ Autonoma Madrid, Hosp Univ Princesa, IIS IP, Madrid, Spain
[2] CIBEREHD, Gastroenterol Unit, Madrid, Spain
[3] Hosp Clin Univ Valencia, Gastroenterol Unit, Valencia, Spain
[4] Hosp Clin Barcelona, CIBEREHD, Barcelona, Spain
[5] IDIBAPS, Gastroenterol Unit, Barcelona, Spain
[6] Hosp Univ Clin San Carlos, Gastroenterol Unit, Madrid, Spain
[7] Hosp Univ Miguel Servet, Zaragoza, Spain
[8] CIBEREHD, Gastroenterol Unit, Zaragoza, Spain
[9] Hosp Univ Bellvitge, Gastroenterol Unit, Barcelona, Spain
[10] Hosp Univ Ramon y Cajal, Gastroenterol Unit, Madrid, Spain
[11] Hosp Univ Reina Sofia, Gastroenterol Unit, Cordoba, Spain
[12] Hosp Univ & Politecn La Fe, Valencia, Spain
[13] CIBEREHD, Gastroenterol Unit, Valencia, Spain
[14] Hosp Univ Burgos, Gastroenterol Unit, Burgos, Spain
[15] Hosp Univ Puerta Hierro Majadahonda, Gastroenterol Unit, Madrid, Spain
[16] Hosp Manises, Gastroenterol Unit, Valencia, Spain
[17] Hosp Univ Cent Asturias, Gastroenterol Unit, Oviedo, Spain
[18] Hosp Badalona Germans Trias & Pujol, Badalona, Spain
[19] CIBEREHD, Gastroenterol Unit, Badalona, Spain
[20] Corporacio Sanitaria Univ Parc Tauli, Hosp Sabadell, Sabadell, Spain
[21] CIBEREHD, Gastroenterol Unit, Sabadell, Spain
[22] Hosp Univ Fdn Alcorcon, Gastroenterol Unit, Madrid, Spain
[23] Hosp Univ La Paz, Madrid, Spain
[24] Inst Invest La Paz IdiPaz, Gastroenterol Unit, Madrid, Spain
[25] Hosp Univ Girona Dr Josep Trueta, Gastroenterol Unit, Girona, Spain
[26] Hosp Univ Marques Valdecilla, Santander, Spain
[27] IDIVAL, Gastroenterol, Santander, Spain
[28] Consorci Sanitari Terrassa, Gastroenterol, Tarrasa, Spain
[29] Hosp Univ Rio Hortega, Gastroenterol, Valladolid, Spain
[30] Hosp Univ Mutua Terrasa, Gastroenterol Unit, Tarrasa, Spain
[31] Hosp del Mar, Gastroenterol Unit, Barcelona, Spain
[32] Hosp Gen Univ Ciudad Real, Ciudad Real, Spain
[33] CIBEREHD, Gastroenterol Unit, Ciudad Real, Spain
[34] Hosp Santa Creu & Sant Pau, Gastroenterol Unit, Barcelona, Spain
[35] Complejo Hosp Univ Vigo, Gastroenterol Unit, Vigo, Spain
[36] Hosp Univ Fuenlabrada, Madrid, Spain
[37] Inst Invest La Paz IdiPaz, Gastroenterol Unit, Madrid, Spain
[38] Hosp Univ Cruces, Baracaldo, Spain
[39] Hosp Clin Univ Salamanca, Gastroenterol Unit, Salamanca, Spain
[40] Hosp Univ Doce Octubre, Gastroenterol Unit, Madrid, Spain
[41] Hosp Torrejon, Gastroenterol Unit, Madrid, Spain
[42] Hosp Univ Virgen Victoria, Gastroenterol Unit, Malaga, Spain
[43] Hosp Gen San Jorge, Gastroenterol Unit, Huesca, Spain
[44] Hosp Basurto, Gastroenterol Unit, Bilbao, Spain
[45] Hosp Clin Univ Lozano Blesa, Gastroentero Unit, Zaragoza, Spain
[46] Hosp Clin Univ Valladolid, Gastroenterol Unit, Valladolid, Spain
[47] Hosp Gen Univ Elche, Gastroenterol Unit, Elche, Spain
[48] Hosp Galdakao Usansolo, Gastroenterol Unit, Galdakao, Spain
[49] Hosp Gen Univ Alicante, Alicante, Spain
[50] CIBEREHD, Gastroenterol Unit, Alicante, Spain