D. J. Helfrich

Childhood onset systemic sclerosis: classification, clinical and serologic features, and survival in comparison with adult onset disease.

T. Medsger, V. Steen, K. Scalapino, 2006, The Journal of rheumatology.

Normotensive renal failure in systemic sclerosis.

T. Medsger, V. Steen, B. Banner, 1989, Arthritis and rheumatism.

Systemic sclerosis (scleroderma) and multiple sclerosis.

T. Medsger, D. Helfrich, D. Trostle, 1986, Arthritis and rheumatism.

Scleromyxedema myopathy: case report and review of the literature.

T. Medsger, D. Helfrich, W. Er, 1988, Arthritis and rheumatism.