RT Journal Article SR Electronic T1 Upfront Combination Therapy With Rituximab and Mycophenolate Mofetil for Progressive Systemic Sclerosis JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 304 OP 305 DO 10.3899/jrheum.200484 VO 48 IS 2 A1 Doron Rimar A1 Itzhak Rosner A1 Gleb Slobodin YR 2021 UL http://www.jrheum.org/content/48/2/304.abstract AB