@inbook{1174595831,
author={Robert J. Mayer},
editor={Jameson, J. Larry and Fauci, Anthony S. and Kasper, Dennis L. and Hauser, Stephen L. and Longo, Dan L. and Loscalzo, Joseph},
title={Cánceres del tubo digestivo bajo},
booktitle={Harrison. Principios de Medicina Interna, 20e},
publisher={McGraw-Hill Education},
address={New York, NY},
year={2018},
url={accessmedicina.mhmedical.com/content.aspx?aid=1174595831}
}