[1] Alicante Univ Gen Hosp, Res Lab, Alicante, Spain
[2] Alicante Univ Gen Hosp, Serv Digest Med, Alicante, Spain
[3] Alicante Univ Gen Hosp, Dept Pathol, Alicante, Spain
[4] Alicante Univ Gen Hosp, Clin Pharmacol Dept, Alicante, Spain
[5] Elche Univ Gen Hosp, Mol Genet Lab, Alicante Inst Hlth & Biomed Res, Inst Invest Sanitaria & Biomed Alicante, Alicante, Spain
[6] Hosp Clin Barcelona, CIBERehd, Inst Malaties Digest & Metab, Barcelona, Spain
[7] Univ Basque Country, Hosp Donostia, Ctr Invest Biomed Red Enfermedades Hepat & Digest, Gastroenterol Dept, San Sebastian, Spain
[8] Hosp Mutua Terrassa, Gastroenterol Dept, Terrassa, Spain
[9] Complexo Hosp Univ Ourense, Gastroenterol Dept, Orense, Spain
[10] Complexo Hosp Vigo, Gastroenterol Dept, Vigo, Spain
[11] Complejo Hosp Navarra, Dept Gastroenterol, Pamplona, Spain
[12] Hosp Arnau Vilanova, Dept Oncol, Lleida, Spain
[13] Hosp Puerta de Hierro, Gastroenterol Dept, Madrid, Spain
[14] Hosp del Mar, Med Res Inst, Dept Gastroenterol, Barcelona, Spain
[15] Clin Univ Navarra, Gastroenterol Dept, Pamplona, Spain
[16] Hosp 12 Octubre, Dept Gastroenterol, Madrid, Spain
[17] Hosp Valle De Hebron, Oncol Dept, Barcelona, Spain
[18] Hosp Univ Dr Josep Trueta, Gastroenterol Dept, Girona, Spain
[19] Hosp Bellvitge Princeps Espanya, Gastroenterol Dept, Barcelona, Spain
[20] Hosp Univ Canarias, Gastroenterol Dept, Santa Cruz De Tenerife, Spain
[21] Hosp Clin Barcelona, Dept Pathol, Barcelona, Spain