RT Book, Section A1 Hoffman, Barbara L. A1 Schorge, John O. A1 Halvorson, Lisa M. A1 Hamid, Cherine A. A1 Corton, Marlene M. A1 Schaffer, Joseph I. SR Print(0) ID 1171530950 T1 Evaluation of the Infertile Couple T2 Williams Gynecology, 4e YR 2020 FD 2020 PB McGraw-Hill Education PP New York, NY SN 9781260456868 LK accessmedicine.mhmedical.com/content.aspx?aid=1171530950 RD 2024/10/14 AB Infertility is defined as the inability to conceive after 1 year of unprotected intercourse of reasonable frequency. It can be subdivided into primary infertility, that is, no prior pregnancies, and secondary infertility, referring to infertility following at least one prior conception.