title: Hepatitis associated antigen (HAA) in liver disease in Ethiopia.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005002:Ethiopia; D005260:Female; D006506:Hepatitis A / Q000453:epidemiology*; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D006511:Hepatitis B Antigens