@inbook{1114101906, author={Nahum Méndez-Sánchez and Misael Uribe Esquivel}, title={Prólogo}, booktitle={Gastroenterología, 2e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2019}, url={accessmedicina.mhmedical.com/content.aspx?aid=1114101906} }