Development of rheumatoid arthritis during treatment of multiple sclerosis with interferon beta 1-a. Coincidence of two conditions or a complication of treatment: A case report. Hojjati S M M, Heidari B, Babaei M J Adv Res. 2016 Sep; 7(5):611-3. Epub 2016 Jun 25. PMID: 27489727. Abstract CommentRecommendBookmarkWatch