title: Lecithin-spingomyelin ratio in amniotic fluid for determination of the optimal time of termination of pregnancy.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D002585:Cesarean Section; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007751:Labor, Induced; D008775:Methylprednisolone / Q000627:therapeutic use; D010713:Phosphatidylcholines / Q000032:analysis*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000378:metabolism; D012127:Respiratory Distress Syndrome, Newborn / Q000517:prevention & control*; D013109:Sphingomyelins / Q000032:analysis*
chemical_list: D010713:Phosphatidylcholines; D013109:Sphingomyelins; D008775:Methylprednisolone