RT Journal Article SR Electronic T1 Overlap Syndromes: Exploring the Genetic Underpinnings JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2624 OP 2624 DO 10.3899/jrheum.090733Cl VO 36 IS 11 A1 A.A.M. Bookman YR 2009 UL http://www.jrheum.org/content/36/11/2624.2.abstract AB