REFERENCES
- Hayashi S, Umeda T. 35 years of Japanese policy on rare dis-eases. Lancet. 2008;372:889–90.
- Statistics and Information Department, Minister's Secretariat, Ministry of Health, Labour and Welfare. Report on Public Health Administration and Services 2007 (in Japanese). Tokyo: Statistics and Information Department, Ministry of Health, Labour and Welfare, Japan. 2009.
- Ohta A, Nagai M, Nishina M, Shibazaki S, Ishijima H, Izumida M. Age at the onset of intractable disease: based on a clinical database for patients receiving financial aid for treatment (in Japanese). Nihon Koshu Eisei Zasshi. 2007;54:3–14.
- Simard JF, Costenbader KH. Epidemiology and classification of systemic lupus erythematosus In: Hochberg MC, Silman AJ, Smolen JS, Weinblatt ME, Weisman MH, editors. Rheumatology, 5th ed. Philadelphia: Mosby/Elsevier; 2010. p. 1223–8.
- Rus V, Maury EE, Hochberg MC. The epidemiology of systemic lupus erythematosus. In: Wallace DJ, Hahn BH, editors. Dubois' lupus erythematosus. 7th ed. Philadelphia: Lippincott Williams & Wilkins; 2007. p. 34–44.
- Boddaert J, Huong DL, Amoura Z, Wechsler B, Godeau P, Piette JC. Late-onset systemic lupus erythematosus: a personal series of 47 patients and pooled analysis of 714 cases in the literature. Medicine. 2004;83:348–59.
- Oddis CV, Ascherman DP. Clinical features, classification, and epidemiology of inflammatory muscle disease. In: Hochberg MC, Silman AJ, Smolen JS, Weinblatt ME, Weisman MH, editors. Rheumatology. 5th ed. Philadelphia: Mosby/Elsevier; 2010. p. 1439–55.
- Oddis CV, Conte CG, Steen VD, Medsger TA Jr. Incidence of polymyositis-dermatomyositis: a 20-year study of hospital diag-nosed cases in Allegheny County, PA 1963–1982. J Rheumatol. 1990;17: 1329–34.
- Mayes M, Assassi S. Epidemiology and classification of sclero-derma. In: Hochberg MC, Silman AJ, Smolen JS, Weinblatt ME, Weisman MH, editors. Rheumatology. 5th ed. Philadelphia: Mosby/Elsevier; 2010. p. 1361–6.
- Steen VD, Oddis CV, Conte CG, Janoski J, Casterline GZ, Medsger TA Jr. Incidence of systemic sclerosis in Allegheny County, Pennsylvania. A twenty-year study of hospital-diagnosed cases, 1963–1982. Arthritis Rheum. 1997;40: 441–5.
- Chifflot H, Fautrel B, Sordet C, Chatelus E, Sibilia J. Incidence and prevalence of systemic sclerosis: a systematic literature review. Semin Arthritis Rheum. 2008;37:223–35.