We read the review by Moore et al . (2012), recently published in this journal, with great interest and compliment the authors for their thorough review of cognitive impairment and its relation to vitamin B12.
Huijts, M., van Oostenbrugge, R. J., Rouhl, R. P., Menheere, P. P. C. A., & Duits, A. (2013). Effects of vitamin B12 supplementation on cognition, depression, and fatigue in patients with lacunar stroke. International Psychogeriatrics, 25(3), 508-510. https://doi.org/10.1017/S1041610212001925