Lecithin-sphingomyelin ratio in respiratory distress syndrome.
D002855:Chromatography, Thin Layer; D006801:Humans; D007231:Infant, Newborn; D008722:Methods; D010713:Phosphatidylcholines / Q000032:analysis*; D012127:Respiratory Distress Syndrome, Newborn / Q000378:metabolism*; D013109:Sphingomyelins / Q000032:analysis*
D010713:Phosphatidylcholines; D013109:Sphingomyelins