title: Incidence rate of implantation in "nonpregnant" patients.
authors.forename: C R
authors.initials: CR
authors.lastname: Weinberg
authors.forename: A J
authors.initials: AJ
authors.lastname: Wilcox
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology*; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy