Depression and serum 25-hydroxyvitamin D in older adults living at northern latitudes – AGES-Reykjavik Study..

Imai CM, Halldorsson TI, Eiriksdottir G, Cotch MF, Steingrimsdottir L, Thorsdottir I, Launer LJ, Harris T, Gudnason V, Gunnarsdottir I. J Nutr Sci. 2015 20;4:e37. PMID:26688723