1. Centers for Disease Control: Hepatitis Surveillance. Report number 53, December, 1990
2. CDC: Protection against viral hepatitis. Recommendations of the Immunization Practices Advisory Committee (ACIP). MMWR 39:1?26, 1990
3. Szmuness W, Harley EJ, Ikram H, Stevens CE: Sociodemographic aspects of the epidemiology of hepatitis B.In Viral Hepatitis. Etiology, Epidemiology, Pathogenesis and Prevention. GN Vyas, SN Cohen, R Schmid (eds). Philadelphia, Franklin Institute Press, 1978, pp 297?320
4. Williams WW, Hickson MA, Kane MA, Kendal AP, Spika JS, Hinman AR: Immunization policies and vaccine coverage among adults: the risk for missed opportunities. Ann Intern Med 108:616?625, 1988
5. Beasley RP: Hepatitis B virus as the etiologic agent in hepatocellular carcinoma-epidemiologic considerations. Hepatology 2:215?265, 1982