title: In this issue. Falling abortion rates, contraception and young adult sexual behavior.
mesh_terms: D000028:Abortion, Induced / Q000639:trends*; D003268:Contraception Behavior; D003380:Courtship; D005260:Female; D006801:Humans; D008297:Male; D057240:Patient Preference; D011247:Pregnancy; D012749:Sexually Transmitted Diseases / Q000517:prevention & control