Trostchansky, J., Cardozo, S., Laurini, M., Alvarez, P., Machín, M., Derboghosian, A., Delgado, J., Scelza, A., Lepera, R., Pradines, L., Bazzino, L., Montero, H., Leal, G., Plazzotta, C., Rodríguez, P. and Machado, F. 2002. Upper Digestive Hemorrhage at Hospital Maciel. Descriptive prospective study. Revista Cirugía del Uruguay. 72, 3 (Apr. 2002), 254–260.