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Rheumatoidarthritis(RA)isanauto immunedisease,thecauseofwhichisnotclear.Itmani festedjointchangeaschieflesion,isafrequentlyencou
Rheumatoidarthritis (RA) isanauto immunedisease, thecauseofwhichisnotclear. Itmani festedjointchangeaschieflesion, isafrequentlyencou