title: Serum thyroxine and triiodothyronine levels in newborns: effect of gestational age.
mesh_terms: D006801:Humans; D007231:Infant, Newborn / Q000097:blood*; D007233:Infant, Postmature / Q000097:blood; D007234:Infant, Premature / Q000097:blood; D013974:Thyroxine / Q000097:blood*; D014284:Triiodothyronine / Q000097:blood*
chemical_list: D014284:Triiodothyronine; D013974:Thyroxine