1. Estimates of the prevalence of selected arthritic and musculoskeletal diseases in the United States;Lawrence;J. Rheumatol.,1989
2. Epidemiology of the Rheumatic Diseases;Silman,1993
3. The Autoimmune Diseases;Rose,1992
4. Defining criteria for autoimmune diseases (Witebsky's postulates revised);Rose;Immunol. Today,1993
5. U.S. Census, 1996, Census of Population, 1996