Media type: E-Article Title: Introduction Contributor: Chavarro, Jorge E.; Schlaff, William D. imprint: Elsevier BV, 2018 Published in: Fertility and Sterility Language: English DOI: 10.1016/j.fertnstert.2018.07.023 ISSN: 0015-0282 Keywords: Obstetrics and Gynecology ; Reproductive Medicine Origination: Footnote: Access State: Open Access