Sparks editorial -- RA pathogenesis has been linked to pollution, Lung Dz, smoking, silica dust, asbestos, textile dust, brick/concrete laying, pesticides, military burn pits - some w/ strong associ w/ HLA-SE and ACPA, but not ACPA-negative RA https://t.co/ZStmF8MeLD https://t.co/xQxJ74aQ81