No abstract available
Publication types
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Letter
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Randomized Controlled Trial
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Research Support, Non-U.S. Gov't
MeSH terms
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Aged
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Aged, 80 and over
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Double-Blind Method
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Female
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Follow-Up Studies
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Humans
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Keratosis, Actinic / drug therapy*
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Male
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Middle Aged
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Niacinamide / therapeutic use*
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Treatment Outcome
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Vitamin B Complex / therapeutic use*
Substances
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Vitamin B Complex
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Niacinamide