No abstract available
MeSH terms
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Humans
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Infant, Extremely Premature / blood*
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Infant, Newborn
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Informed Consent*
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Multicenter Studies as Topic
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Oxygen / administration & dosage*
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Oxygen Inhalation Therapy / adverse effects*
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Randomized Controlled Trials as Topic / ethics
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Retinopathy of Prematurity / epidemiology
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Retinopathy of Prematurity / etiology
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Retinopathy of Prematurity / prevention & control
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Risk
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Survival Rate