1. Systemic sclerosis and localized scleroderma;Medsger,1988
2. Systemic sclerosis;LeRoy,1987
3. Scleroderma (systemic sclerosis);LeRoy,1985
4. Scleroderma;Siegel;Med Clin North Am,1977
5. Preliminary criteria for the classification of systemic sclerosis (scleroderma);Masi;Arthritis Rheum,1980