[1] Hosp Univ Marques Valdecilla, Dept Gastroenterol & Hepatol, Grp Invest Clin & Traslac Enfermedades Digest, Inst Invest Valdecilla IDIVAL, Santander, Spain
[2] Burgos Univ Hosp, Burgos, Spain
[3] Univ Hosp October 12, Madrid, Spain
[4] Hosp Clin Barcelona, Barcelona, Spain
[5] Hosp Parc Tauli Sabadell, Sabadell, Spain
[6] Virgen Del Rocio Univ Hosp, Seville, Spain
[7] Ramon & Cajal Hosp, Madrid, Spain
[8] Hosp Univ MutuaTerrassa, Terrassa, Spain
[9] Hosp Santa Creu & St Pau Church, Barcelona, Spain
[10] Hosp Univ Clin San Cecilio, Granada, Spain
[11] Hosp Mar, Barcelona, Spain
[12] Germans Trias & Pujol Hosp, Badalona, Spain
[13] Hosp Univ Virgen Victoria, Malaga, Spain
[14] Complejo Univ Hosp Pontevedra, Pontevedra, Spain
[15] Consortium Gen Univ Hosp Valencia, Valencia, Spain
[16] Puerta De Hierro Majadahonda Univ Hosp, Majadahonda, Spain
[17] Consorci Sanitari Terrassa, Terrassa, Spain
[18] Hosp Univ Canarias, San Cristobal la Laguna, Spain
[19] Alvaro Cunqueiro Hosp, Vigo, Spain
[20] Hosp Univ Josep Trueta, Girona, Spain
[21] Hosp Infanta Cristina, Madrid, Spain
[22] Hosp Univ Nuestra Senora Candelaria, Santa Cruz De Tenerife, Spain
[23] Hosp Valle De Hebron, Barcelona, Spain
[24] Hosp Gen Univ Gregorio Maranon, Madrid, Spain