Roles of 1,25(OH)2D3 and Vitamin D Receptor in the Pathogenesis of Rheumatoid Arthritis and Systemic Lupus Erythematosus by Regulating the Activation of CD4+ T Cells and the PKCδ/ERK Signaling PathwayXiaojie He, Xiqiang Dang|Cellular Physiology and Biochemistry|2016Cited by 48