title: Impact of recommendations against periconceptional contraceptive pill use.
abstract: A case-control study of isolated congenital limb deficiencies was performed in a ten-year (1975-1984) population-based Hungarian data set. It was appropriate to check the impact of a precautionary measure: the recommendation for a three-month interval between the discontinuation of contraceptive pill use and planned conception through mass media introduced in Hungary from 1977. The proportion of periconceptional pill use was significantly lower in the time period of 1979-84.
authors.affiliation: Department of Human Genetics and Teratology, National Institute of Hygiene-WHO Collaborating Centre for the Community Control of Hereditary Diseases, Budapest, Hungary.
authors.forename: A E
authors.initials: AE
authors.lastname: Czeizel
mesh_terms: D016022:Case-Control Studies; D000013:Congenital Abnormalities / Q000453:epidemiology*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D005306:Fertilization; D006801:Humans; D006814:Hungary; D017880:Limb Deformities, Congenital; D011247:Pregnancy; D013997:Time Factors
chemical_list: D003276:Contraceptives, Oral