title: Clinical experience with the amniotic fluid lecithin-sphingomyelin ratio. I. Antenatal prediction of pulmonary maturity.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D001034:Apgar Score; D001724:Birth Weight; D002140:California; D036861:Delivery, Obstetric; D005314:Embryonic and Fetal Development; D005260:Female; D005865:Gestational Age; D006801:Humans; D006819:Hyaline Membrane Disease / Q000401:mortality; D007231:Infant, Newborn; D008168:Lung / Q000196:embryology / Q000254:growth & development; D010713:Phosphatidylcholines / Q000032:analysis*; D011225:Pre-Eclampsia / Q000150:complications; D011247:Pregnancy; D011248:Pregnancy Complications; D011296:Prenatal Diagnosis; D012127:Respiratory Distress Syndrome, Newborn / Q000175:diagnosis* / Q000453:epidemiology; D012189:Retrospective Studies; D013109:Sphingomyelins / Q000032:analysis*
chemical_list: D010713:Phosphatidylcholines; D013109:Sphingomyelins