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3. Intestinal permeability and inflammation in rheumatoid arthritis: effects of nonsteroidal anti-inflammatory drugs;Bjarnason;Lancet,1984
4. Placebo-controlled, blind study of dietary manipulation therapy in rheumatoid arthritis;Darlington;Lancet,1986
5. Food intolerance in rheumatoid arthritis. I. A double blind, controlled trial of the clinical eifects of elimination of milk allergens and azo dyes;Laar;Ann Rheum Dis,1992