No abstract available
MeSH terms
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Aerospace Medicine / methods*
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Asthma / diagnosis*
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Dyspnea / prevention & control*
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Female
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Humans
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Male
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Oxygen / therapeutic use*
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Pulmonary Disease, Chronic Obstructive / diagnosis*
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Pulmonary Disease, Chronic Obstructive / ethnology*
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Pulmonary Disease, Chronic Obstructive / therapy*
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Travel*