title: Pregnancy and the timing of intercourse.
authors.forename: D K
authors.initials: DK
authors.lastname: Waller
authors.forename: A M
authors.initials: AM
authors.lastname: Sweeney
mesh_terms: D003075:Coitus; D005260:Female; D005306:Fertilization; D006801:Humans; D008297:Male; D008597:Menstrual Cycle; D010060:Ovulation; D011247:Pregnancy; D013997:Time Factors