title: Contraception and double effect.
authors: a Universität Duisburg-Essen.
authors: Ezio
authors: E
authors: Di Nucci
mesh_terms: D002410:Catholicism; D003277:Contraceptives, Oral, Combined / Q000494:pharmacology*; D034723:Double Effect Principle; D005260:Female; D006801:Humans; D011247:Pregnancy
chemical_list: D003277:Contraceptives, Oral, Combined