1. Hepatocellular carcinoma and hepatitis B virus, a prospective study of 22.707 men in Taiwan;Beasley;Lancet II,1981
2. Transmission of hepatitis B virus;Francis;Semin Liver Dis,1981
3. Occult blood accumulation under fingernails: a mechanism for the spread of blood borne infection;Allen;JADA,1982
4. P., and others. Occurrence of hepatitis A, B, and non-A/non-B in the US;Francis;Am J Med,1984
5. Tuberculosis—United States. 1983;Centers for Disease Control;MMWR,1984