Free thyroxine index in maternal and cord sera: coefficients of variation evaluated by the method of differences of duplicates.
D003409:Congenital Hypothyroidism; D005260:Female; D006801:Humans; D007037:Hypothyroidism / Q000175:diagnosis; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000175:diagnosis*; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D013959:Thyroid Diseases / Q000151:congenital*; D013960:Thyroid Function Tests; D013974:Thyroxine / Q000097:blood*; D014284:Triiodothyronine / Q000032:analysis
D014284:Triiodothyronine; D013974:Thyroxine