title: Prediction of fetal lung and kidney maturity by determination of amniotic fluid lecithin: sphingomyelin ratio and creatinine concentration.
mesh_terms: D000649:Amniocentesis; D000653:Amniotic Fluid / Q000032:analysis*; D001835:Body Weight; D002986:Clinical Trials as Topic; D003404:Creatinine / Q000032:analysis*; D005260:Female; D005333:Fetus; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007668:Kidney / Q000196:embryology*; D008168:Lung / Q000196:embryology*; D010713:Phosphatidylcholines / Q000032:analysis*; D011225:Pre-Eclampsia / Q000150:complications; D011247:Pregnancy; D011254:Pregnancy in Diabetics; D012127:Respiratory Distress Syndrome, Newborn / Q000453:epidemiology; D013109:Sphingomyelins / Q000032:analysis*
chemical_list: D010713:Phosphatidylcholines; D013109:Sphingomyelins; D003404:Creatinine