The value of the foam stability test.
D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D005333:Fetus; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D008722:Methods; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012127:Respiratory Distress Syndrome, Newborn / Q000175:diagnosis*