James F. Fries

Progression of functional disability in patients with rheumatoid arthritis. Associations with rheumatology subspecialty care.

J. Fries, M. M. Ward, J. Leigh, 1993, Archives of internal medicine.

Education, Gender, and the Compression of Morbidity

J. Fries, J. Leigh, J. Leigh, 1994, International journal of aging & human development.