Decreased Brain Levels of Vitamin B12 in Aging, Autism and Schizophrenia Zhang, Yiting ; Hodgson, Nathaniel W. ; Trivedi, Malav S. ; Abdolmaleky, Hamid M. ; Fournier, Margot ; Cuenod, Michel ; Do, Kim Quang ; Deth, Richard C. Abstract Publication: PLoS ONE Pub Date: January 2016 DOI: 10.1371/journal.pone.0146797 Bibcode: 2016PLoSO..1146797Z