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"Washington, Dec 14 (ANI): A new research has found that smoking accounts for more than a third of cases of the most severe and common form of rheumatoid arthritis."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.oneindia.com/2010/12/14/smokingaccounts-for-more-than-a-third-of-severe-rheumatoid.html>