We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleIncreased frequency of complement C4B deficiency in rheumatoid arthritis.AuthorsRigby WF; Wu YL; Zan M; Zhou B; Rosengren S; Carlson C; Hilton W; Yu CYPublicationArthritis and rheumatism, 2012, Vol 64, Issue 5, p1338ISSN1529-0131Publication typearticleDOI10.1002/art.33472