No abstract available
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Acute Disease
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Altitude Sickness / epidemiology*
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Confidentiality
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Data Collection / standards
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Epidemiologic Methods
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Humans
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Models, Statistical
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Prospective Studies
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Surveys and Questionnaires
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United States / epidemiology