1. Blumberg BS: Serum proteins and iso-precipitins. Bull NY Acad Med 40: 377, 1964
2. On the State of the Public Health for the Year 1979. DHSS London, HMSO 1980 p 54
3. WHO Weekly Epidemiological Record. 52:253, 1977
4. Szmuness W, Prince AM: Epidemiologic patterns of viral hepatitis in Eastern Europe in the light of recent findings concerning the serum hepatitis antigen. J. Infect Dis 123: 200, 1971
5. Mosley JW: Epidemiology of HAV infection. In: Viral Hepatitis edited by Vyas GN, Cohen SN, Schmid R, Philadelphia, Franklin Institute Press, 1978, p 85