Rubella and autoimmunity Antinucleosome antibodies and primary antiphospholipid syndrome HLA-DRB5*01 associated with protection against cutaneous vasculitis of RA Extra-articular clinical manifestations in Brazilian patients with spondyloarthritis Nutritional aspects in SLE Frailty syndrome in the community-dwelling elderly with osteoarthritis Thyroiditis autoimmune and rheumatic diseases Stress perception, depressive symptoms, and fibromyalgia