We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEvaluation of genetic markers as instruments for Mendelian randomization studies on vitamin D.AuthorsBerry DJ; Vimaleswaran KS; Whittaker JC; Hingorani AD; Hyppönen EPublicationPloS one, 2012, Vol 7, Issue 5, pe37465ISSN1932-6203Publication typearticleDOI10.1371/journal.pone.0037465