@inbook{1154011107, author={Claudia L. Werner and Debra L. Richardson and Stephanie Y. Chang and William F. Griffith and Cherine A. Hamid and David D. Rahn and Elysia Moschos and Barbara L. Hoffman}, title={Aborto del primer trimestre}, booktitle={Williams, Ginecología guía de estudio, 3e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2018}, url={accessmedicina.mhmedical.com/content.aspx?aid=1154011107} }