1. Curutchet HP, Terz JJ, Kay S, Lawrence W Jr (1971) Primary liver cancer. Surgery 70:467–479
2. Tang ZY (1985) Prognosis of hepatocellular carcinoma and factors influencing it. In: Tang ZY (ed) Subclinical hepatocellular carcinoma. China Acad Publ, Beijing; Springer, Berlin pp 179–188
3. Tang ZY (1981) A new concept on the natural course of hepatocellular carcinoma. Chin Med J 94: 585–588
4. Tang ZY (1985) The role of unicentric origin the subclinical hepatocellular carcinoma. In: Tang ZY (ed) Subclinical hepatocellular carcinoma. China Acad Publ, Beijing; Springer, Berlin, pp 162–170
5. Shanghai Coordinating Group for Research on Liver Cancer, China (1979) Diagnosis and treatment of primary hepatocellular carcinoma in early stage, report of 134 cases. Chin Med J 92:801–806