No abstract available
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Breath Tests
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England / ethnology
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Humans
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Hydrogen / analysis
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India / ethnology
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Lactase
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Prevalence
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West Indies / ethnology
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beta-Galactosidase / deficiency*
Substances
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Hydrogen
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Lactase
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beta-Galactosidase