Influence of the vitamin D plasma level and vitamin D-related genetic polymorphisms on the immune status of patients with type 1 diabetes: a pilot study - Rose, K; Penna-Martinez, M; Klahold, E; Karger, D; Shoghi, F; Kahles, H; Bayer, M; Hintermann, E; Pfeilschifter, J M; Badenhoop, K; Ramos-Lopez, E; Christen, U (Clin Exp Immunol, 2013)