@inbook{1120405672, author={Ann-Marie Surette, MD and Samantha M. Dunham, MD}, editor={DeCherney, Alan H. and Nathan, Lauren and Laufer, Neri and Roman, Ashley S.}, title={Riesgos iniciales del embarazo}, booktitle={Diagnóstico y tratamiento ginecoobstétricos, 11e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2015}, url={accessmedicina.mhmedical.com/content.aspx?aid=1120405672} }