title: Study examines effects of advance access to emergency contraception.
authors.forename: Tracy
authors.initials: T
authors.lastname: Hampton
mesh_terms: D044363:Contraception, Postcoital / Q000706:statistics & numerical data; D005260:Female; D006297:Health Services Accessibility; D006801:Humans; D011247:Pregnancy; D018873:Pregnancy Rate; D012309:Risk-Taking; D014481:United States