title: Retrospective versus prospective estimates of number of sexual partners.
authors.forename: P J
authors.initials: PJ
authors.lastname: Feldblum
authors.forename: S S
authors.initials: SS
authors.lastname: Weir
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000209:etiology*; D006801:Humans; D011446:Prospective Studies; D012189:Retrospective Studies; D012725:Sexual Behavior; D012747:Sexual Partners