[1] Hosp Univ Bellvitge, Serv Cirugia Gen & Digest, Lhospitalet De Llobregat, Barcelona, Spain
[2] Hosp Univ Bellvitge, Serv Anat Patol, Lhospitalet De Llobregat, Barcelona, Spain
[3] Hosp Univ Bellvitge, Serv Radiodiagnost, Lhospitalet De Llobregat, Barcelona, Spain