title: Laboratory assessment of fetal lung maturity: lecithin/sphingomyelin ratio vs. cortisol and foam-test assays.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis; D003348:Cortisone / Q000378:metabolism; D005260:Female; D005333:Fetus; D006801:Humans; D006854:Hydrocortisone / Q000032:analysis* / Q000097:blood; D008168:Lung / Q000196:embryology*; D008722:Methods; D010713:Phosphatidylcholines / Q000032:analysis*; D011247:Pregnancy; D011663:Pulmonary Surfactants / Q000032:analysis*; D013109:Sphingomyelins / Q000032:analysis*
chemical_list: D010713:Phosphatidylcholines; D011663:Pulmonary Surfactants; D013109:Sphingomyelins; D003348:Cortisone; D006854:Hydrocortisone