[1] Univ Seville, Unidad Clin Enfermedades Infecciosas Microbiol &, Hosp Univ Virgen Macarena, IBIS, Seville, Spain
[2] Univ Complutense Madrid, Hosp Clin San Carlos, Fac Med, Serv Cirugia, Madrid, Spain
[3] Univ Complutense Madrid, Fac Med, Dept Cirugia, Madrid, Spain
[4] Univ Barcelona, Hosp Clin Barcelona, Serv Cirugia Gastrointestinal ICMDM, Barcelona, Spain
[5] Univ Autonoma Barcelona, Unidad Enfermedades Infecciosas, Hosp Santa Creu & St Pau, Inst Invest Biomed St Pau, Barcelona, Spain
[6] Hosp Univ Alava, Serv Microbiol, Vitoria, Spain
[7] Hosp Mar, Serv Enfermedades Infecciosas, IMIM, Barcelona, Spain
[8] Hosp Reg Univ Malaga, Serv Enfermedades Infecciosas, IBIMA, Malaga, Spain
[9] Hosp Univ Guadalajara, Serv Cirugia Gen, Guadalajara, Spain
[10] Hosp Univ Virgen del Rocio Sevilla, Serv Cirugia Gen, Seville, Spain
[11] Univ Navarra, Clin Univ Navarra, Serv Enfermedades Infecciosas & Microbiol, Navarra, Spain
[12] Hosp Univ Bellvitge, Serv Enfermedades Infecciosas, Barcelona, Spain
[13] Hosp Son Espases, Serv Enfermedades Infecciosas, Palma De Mallorca, Spain
[14] Hosp Univ Marques de Valdecilla, Serv Cirugia Gen, Santander, Spain
[15] Hosp Univ La Paz, Serv Cirugia Gen, Madrid, Spain
[16] Hosp Univ Rey Juan Carlos, Serv Cirugia Gen, Madrid, Spain
[17] Hosp Univ Miguel Servet, Serv Cirugia Gen, Zaragoza, Spain
[18] Univ Barcelona, Hosp Clin Barcelona, Serv Enfermedades Infecciosas, IDIBAPS, Barcelona, Spain
[19] Univ Int Catalunya, Hosp Gen Granollers, Serv Cirugia Gen, Catalunya, Spain