[Problem of definition and classification of chronic hepatitis].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002908:Chronic Disease; D005260:Female; D006505:Hepatitis / Q000145:classification*; D006801:Humans; D008103:Liver Cirrhosis / Q000145:classification; D008297:Male; D008875:Middle Aged