Nutrition, sex, and fetal lung maturation.
D000653:Amniotic Fluid / Q000032:analysis; D001827:Body Height; D001835:Body Weight; D004032:Diet; D005314:Embryonic and Fetal Development; D005260:Female; D005865:Gestational Age; D006801:Humans; D006819:Hyaline Membrane Disease / Q000209:etiology; D007231:Infant, Newborn; D008168:Lung / Q000196:embryology*; D008297:Male; D009747:Nutritional Physiological Phenomena; D010713:Phosphatidylcholines / Q000032:analysis; D011247:Pregnancy; D012737:Sex Factors; D013109:Sphingomyelins / Q000032:analysis
D010713:Phosphatidylcholines; D013109:Sphingomyelins