No abstract available
MeSH terms
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Amniotic Fluid / analysis*
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Female
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Fetal Organ Maturity*
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Humans
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Infant, Newborn
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Lung / embryology*
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Phosphatidylcholines / analysis
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Phospholipids / analysis*
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Pregnancy
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Respiratory Distress Syndrome, Newborn / prevention & control
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Sphingomyelins / analysis
Substances
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Phosphatidylcholines
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Phospholipids
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Sphingomyelins