RT Journal Article SR Electronic T1 Overlap of systemic sclerosis and rheumatoid arthritis. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1593 OP 1594 VO 34 IS 7 A1 Alkassab, Firas YR 2007 UL http://www.jrheum.org/content/34/7/1593.abstract AB