@inbook{1185262828, author={Scott D.C. Stern and Adam S. Cifu and Diane Altkorn}, title={Hemorragia del tubo digestivo}, booktitle={Diagnóstico basado en los síntomas: Una guía basada en evidencias, 4e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2021}, url={accessmedicina.mhmedical.com/content.aspx?aid=1185262828} }