title: Circannual variation in hyperbilirubinemia of neonates.
mesh_terms: D001663:Bilirubin / Q000097:blood; D002940:Circadian Rhythm; D006801:Humans; D007231:Infant, Newborn; D007558:Italy; D007567:Jaundice, Neonatal / Q000453:epidemiology*; D008910:Minnesota; D010507:Periodicity; D012107:Research Design; D012621:Seasons
chemical_list: D001663:Bilirubin