Associations between serum homocysteine, holotranscobalamin, folate and cognition in the elderly: a longitudinal study
Hooshmand, B.; Solomon, A.; Kareholt, I.; Rusanen, M.; Hanninen, T.; Leiviska, J.; Winblad, B.; Laatikainen, T.; Soininen, H.; Kivipelto, M. (2012)