title: Timing of intercourse.
authors.forename: J L
authors.initials: JL
authors.lastname: Simpson
authors.forename: R H
authors.initials: RH
authors.lastname: Gray
authors.forename: J T
authors.initials: JT
authors.lastname: Queenan
authors.forename: P
authors.initials: P
authors.lastname: Mena
authors.forename: A
authors.initials: A
authors.lastname: Perez
authors.forename: R T
authors.initials: RT
authors.lastname: Kambic
authors.forename: F
authors.initials: F
authors.lastname: Pardo
authors.forename: M
authors.initials: M
authors.lastname: Barbato
authors.forename: J
authors.initials: J
authors.lastname: Spieler
mesh_terms: D003075:Coitus; D005193:Family Planning Services / Q000379:methods*; D005260:Female; D006801:Humans; D008597:Menstrual Cycle / Q000502:physiology*; D011247:Pregnancy