1. Sasaki H, Inoue K, Higuchi K, et al: Primary biliary cirrhosis in Japan: National survey by the subcommittee on autoimmune hepatitis. Gastroenterol Jpn 1985;20:476–485
2. Sasaki H, Inouc K, Higuchi K, et al: Primary biliary cirrhosis in Japan -National survey-. Kan · Tan · Sui 1982;4:171–178 (in Japanese)
3. Enzan H, Hara H: Autopsy cases of primary biliary cirrhosis in Japan. A statistical study based on the annuals of pathological autopsy cases in Japan from 1958 to 1983. Pathology and Clinical Medicine 1980:4:747–755 (in Japanese)
4. Roll J, Boyer JL, Barry D, et al: The prognostic importance of clinical and histlogical features, in asymptomatic and symptomatic primary biliary cirrhosis. N Engl J Med 1983:308:1–7
5. Fleming CR. Ludwing J, Dickson ER, et al: Asymptomatic primary biliary cirrhosis, presentation, histology and results with D-penicillamine. Mayo Clin Proc 1978:53:587–593