Course of the modified Rodnan skin thickness score in systemic sclerosis clinical trials: analysis of three large multicenter, double-blind, randomized controlled trials.
Amjadi S, Maranian P, Furst DE, Clements PJ, Wong WK, Postlethwaite AE, Khanna PP, Khanna D, Investigators of the D-Penicillamine, Human Recombinant Relaxin, and Oral Bovine Type I Collagen Clinical Trials. Arthritis Rheum. 2009 Aug; 60(8):2490-8.