Amniotic fluid progestins and estrogens in relation to length of gestation.
D000653:Amniotic Fluid / Q000032:analysis*; D002854:Chromatography, Paper; D004967:Estrogens / Q000032:analysis*; D005865:Gestational Age; D011374:Progesterone / Q000032:analysis*; D011485:Protein Binding; D011863:Radioimmunoassay
D004967:Estrogens; D011374:Progesterone