We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleVitamin B12 insufficiency and the risk of fetal neural tube defects.AuthorsRay JG; Blom HJPublicationQJM : monthly journal of the Association of Physicians, 2003, Vol 96, Issue 4, p289ISSN1460-2725Publication typearticleDOI10.1093/qjmed/hcg043