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, William F C; Wu, Yee Ling; Zan, Moe; Zhou, Bi; Rosengren, Sanna; Carlson, Cheryl; Hilton, Whitney; Yu, C YungAbstractTo assess the copy number variation of complement C4A and C4B genes in patients with rheumatoid arthritis (RA).PublicationArthritis and rheumatism, 2012, Vol 64, Issue 5, p1338ISSN1529-0131Publication typeJournal ArticleDOI10.1002/art.33472