@inbook{1150222911, author={Ángel Herrera-Gómez and Silvio A. Ñamendys-Silva and Abelardo Meneses-García}, title={Prólogo a la sexta edición}, booktitle={Manual de Oncología, 6e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2018}, url={accessmedicina.mhmedical.com/content.aspx?aid=1150222911} }