title: Viral hepatitis update 1978.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006506:Hepatitis A / Q000276:immunology; D006509:Hepatitis B / Q000276:immunology; D006525:Hepatitis, Viral, Human / Q000175:diagnosis / Q000276:immunology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012698:Serologic Tests