title: Lactational amenorrhoea, prolactin and contraception.
mesh_terms: D000568:Amenorrhea / Q000209:etiology*; D003267:Contraception; D005260:Female; D006801:Humans; D007774:Lactation; D011247:Pregnancy; D011388:Prolactin / Q000097:blood*
chemical_list: D011388:Prolactin