Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleVitamin B12 deficiency as a worldwide problem.AuthorsStabler SP; Allen RHPublicationAnnual Review of Nutrition, 2004, Vol 24, Issue 1, p299ISSN0199-9885Publication typearticleDOI10.1146/annurev.nutr.24.012003.132440