title: The application of a simple, inexpensive method for the assay of total thyroxine and a free thyroxine parameter to neonates.
mesh_terms: D001724:Birth Weight; D002196:Capillaries; D005312:Fetal Blood / Q000032:analysis; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D013974:Thyroxine / Q000097:blood*
chemical_list: D013974:Thyroxine