title: Further observations on the determination of gestational age by amniotic fluid analysis.
mesh_terms: D000649:Amniocentesis; D000653:Amniotic Fluid / Q000032:analysis*; D000704:Analysis of Variance; D003404:Creatinine / Q000032:analysis; D005260:Female; D005333:Fetus / Q000032:analysis; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D008055:Lipids; D008168:Lung / Q000503:physiopathology; D010614:Pharynx / Q000032:analysis; D010713:Phosphatidylcholines / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D011247:Pregnancy; D012127:Respiratory Distress Syndrome, Newborn / Q000175:diagnosis; D012867:Skin / Q000032:analysis; D013109:Sphingomyelins / Q000032:analysis; D013997:Time Factors; D014708:Vernix Caseosa / Q000032:analysis
chemical_list: D008055:Lipids; D010713:Phosphatidylcholines; D013109:Sphingomyelins; D010758:Phosphorus; D003404:Creatinine