TY - CHAP M1 - Book, Section TI - Contraception A1 - Cunningham, F. Gary A1 - Leveno, Kenneth J. A1 - Bloom, Steven L. A1 - Dashe, Jodi S. A1 - Hoffman, Barbara L. A1 - Casey, Brian M. A1 - Spong, Catherine Y. PY - 2018 T2 - Williams Obstetrics, 25e AB - From the evidence available, it appears to be tolerably satisfactorily demonstrated that in women who copulate at frequent intervals the tube must be regarded as a species of receptaculum seminis, in which spermatozoa are always present and waiting for the ovum, and that fertilization usually occurs in the tubes and only rarely in the uterus.—J. Whitridge Williams (1903) SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/10/10 UR - obgyn.mhmedical.com/content.aspx?aid=1160783155 ER -