@inbook{1191964786, author={Maya Bunik and William W. Hay and Myron J. Levin and Mark J. Abzug}, title={Prefacio}, booktitle={Diagnóstico y tratamiento pediátricos, 26e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2022}, url={accessmedicina.mhmedical.com/content.aspx?aid=1191964786} }