No abstract available
MeSH terms
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Adolescent
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Altitude*
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Comorbidity
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Down Syndrome / complications*
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Heart Defects, Congenital / complications
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Heart Defects, Congenital / epidemiology
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Humans
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Hypertension, Pulmonary / diagnosis*
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Male
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Pulmonary Edema / diagnosis*
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Risk Factors
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Travel