title: Unproductive labour.
mesh_terms: D000293:Adolescent; D000328:Adult; D003267:Contraception / Q000379:methods*; D003276:Contraceptives, Oral / Q000009:adverse effects / Q000494:pharmacology; D005260:Female; D005306:Fertilization / Q000187:drug effects; D006801:Humans; D008297:Male; D010060:Ovulation / Q000187:drug effects
chemical_list: D003276:Contraceptives, Oral