Expression of the multiple sclerosis-associated MHC class II Allele HLA-DRB1*1501 is regulated by vitamin D - Ramagopalan, SV; Maugeri, NJ; Handunnetthi, L; Lincoln, MR; Orton, SM; Dyment, DA; Deluca, GC; Herrera, BM; Chao, MJ; Sadovnick, AD; Ebers, GC; Knight, JC (PLoS Genet, 2009)