We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleMonitoring of vitamin B-12 nutritional status in the United States by using plasma methylmalonic acid and serum vitamin B-12.AuthorsBailey, Regan L.; Carmel, Ralph; Green, RalphPublicationAmerican Journal of Clinical Nutrition, 2011, Vol 94, Issue 2, p552ISSN0002-9165Publication typearticleDOI10.3945/ajcn.111.015222