title: Further observations on the relationship between the amniotic fluid lecithin concentration and fetal pulmonary maturity.
mesh_terms: D000653:Amniotic Fluid / Q000378:metabolism*; D001724:Birth Weight; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases; D008168:Lung / Q000196:embryology*; D010713:Phosphatidylcholines / Q000096:biosynthesis*; D011247:Pregnancy; D012127:Respiratory Distress Syndrome, Newborn
chemical_list: D010713:Phosphatidylcholines