title: [Letter: The incidence of multiple pregnancies].
mesh_terms: D002996:Clomiphene / Q000494:pharmacology; D003276:Contraceptives, Oral / Q000494:pharmacology; D005260:Female; D006801:Humans; D006814:Hungary; D010060:Ovulation / Q000187:drug effects; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000187:drug effects; D013223:Statistics as Topic
chemical_list: D003276:Contraceptives, Oral; D002996:Clomiphene
vernacular_title: Levelek: Az ikerterhességek gyakoriságárol.