論文（英文）
Report of the 16th follow-up survey of primary liver cancer.
Ikai I, Arii S, Ichida T, Okita K, Omata M, Kojiro M, Takayasu K, Nakanuma Y, Makuuchi M, Matsuyama Y, and Yamaoka Y. Report of the 16th follow-up survey of primary liver cancer. Hepatology Research 2005; 32: 163-172.