title: Studies on the incidence of mucoviscidosis based on urban clinical data in European USSR.
mesh_terms: D003550:Cystic Fibrosis / Q000150:complications / Q000453:epidemiology* / Q000235:genetics; D005260:Female; D005787:Gene Frequency; D005808:Genes, Recessive; D006801:Humans; D007231:Infant, Newborn; D007415:Intestinal Obstruction / Q000209:etiology; D008297:Male; D008470:Meconium; D011110:Polymorphism, Genetic; D012426:Russia; D014505:Urban Population