title: [Long-term study of the incidence of the birth of premature fetuses in Czechoslovakia].
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology*; D003604:Czechoslovakia; D005260:Female; D006801:Humans; D007752:Obstetric Labor, Premature / Q000453:epidemiology*; D011153:Population; D011247:Pregnancy; D014504:Urban Health
vernacular_title: Dlouhodobé sledování výskytu porodů nezralých plodů v CSR.