title: A study of chronic hepatitis in northern India.
mesh_terms: D000328:Adult; D000368:Aged; D002908:Chronic Disease; D005260:Female; D006505:Hepatitis / Q000453:epidemiology / Q000276:immunology / Q000473:pathology; D006511:Hepatitis B Antigens; D006801:Humans; D007194:India; D008099:Liver / Q000473:pathology; D008297:Male; D008875:Middle Aged
chemical_list: D006511:Hepatitis B Antigens