1. its prevention by vaccine;Zuckerman;J Infect Dis,1981
2. Prevalence of markers of hepatitis B virus infection in various countries: a WHO collaborative study;Sobeslavsky;Bull WHO,1980
3. The epidemiology of hepatitis B;Dienstag,1984
4. Seroepidemiology of hepatitis B virus infection in the Philippines;Lingao,1984
5. Epidemiological study of hepatitis B virus infection in Taiwan;Sung,1984