P-124Clinical outcome and impact of lymph node level assessment in biliary tract cancers. (24th June 2015) - Martinez-Galán, J.; González-Rivas, C.; Conde, V.; Ruiz-Vozmediano, J.; Castillo, L.; Ochoa, L.; Amezcua, V.; García-García, J.; Ortega, J.A.; González-Flores, E.; Delgado, J.R.