No abstract available
MeSH terms
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Adult
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Aging*
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Child
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Chronic Disease
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Gastric Acid / chemistry
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Gastric Acid / metabolism
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Gastroesophageal Reflux / drug therapy
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Gastroesophageal Reflux / physiopathology*
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Gastrointestinal Agents / therapeutic use
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Humans
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Hydrogen-Ion Concentration