title: Commentary: intercourse: the hidden contraceptive?
authors.forename: R A
authors.initials: RA
authors.lastname: Hatcher
mesh_terms: D001519:Behavior; D003075:Coitus; D005193:Family Planning Services; D007246:Infertility; D000292:Pelvic Inflammatory Disease; D011271:Pregnancy, Ectopic; D012098:Reproduction; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases
keywords: Behavior; Coitus; Family Planning; Family Planning, Behavioral Methods; Infertility; Pelvic Infections; Pregnancy, Ectopic; Reproduction; Sex Behavior--side effects; Sexually Transmitted Diseases