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1. How common is vitamin B-12 deficiency

Description:: In the special section: Is it time for mandatory vitamin B-12 fortification in flour? / edited by Ralph Green and Lindsay H. Allen.
Author:: Allen, Lindsay H.
Subject:: human nutrition , vitamin B12 , vitamin deficiencies , flour , food fortification , food additives , risk groups , dietary surveys , literature reviews , food choices , food intake , disease prevalence , senescence , dietary nutrient sources , young adults , socioeconomic status , malabsorption , poverty , elderly , risk factors , United States , United Kingdom
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2009