title: [Observations on the seasonal variations in the frequency of congenital malformations].
mesh_terms: D002971:Cleft Lip / Q000453:epidemiology*; D002972:Cleft Palate / Q000453:epidemiology*; D000013:Congenital Abnormalities / Q000453:epidemiology*; D004314:Down Syndrome / Q000453:epidemiology*; D004933:Esophageal Atresia / Q000453:epidemiology; D004947:Esophagus / Q000002:abnormalities*; D006548:Hernia, Diaphragmatic / Q000453:epidemiology*; D006554:Hernia, Umbilical / Q000453:epidemiology*; D006801:Humans; D006849:Hydrocephalus / Q000453:epidemiology*; D007231:Infant, Newborn; D007558:Italy; D017880:Limb Deformities, Congenital; D012621:Seasons
vernacular_title: Osservazioni sul comportamento stagionale della frequenza delle malformazioni congenite.