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2. Hepatitis B surface antigen in liver tissue and primary liver carcinoma in Thailand;Bunyaratvej;J Med Assoc Thailand,1979
3. Nationwide survey of major liver diseases in Thailand analysis of 3305 biopsies as to year-end 1978;Bunyaratvej;J Med Assoc Thailand,1981
4. The epidemiology of hepatitis B antigen in a high prevalence area;Punyagupta;Am J Epidemiol,1973
5. The incidence of hepatitis B surface antigen in tropical infections and liver diseases in Thailand;Thongcharoen;J Med Assoc Thailand,1976