Merkel PA, Herlyn K, Martin RW, Anderson JJ, Mayes MD, Bell P, Korn JH, Simms RW, Csuka ME, Medsger TA Jr, Rothfield NF, Ellman MH, Collier DH, Weinstein A, Furst DE, Jiménez SA, White B, Seibold JR, Wigley FM; Scleroderma Clinical Trials Consortium.
Arthritis Rheum. 2002 Sep;46(9):2410-20.