論文（英文）
Report of the 17th Nationwide Follow-up Survey of Primary Liver Cancer in Japan.
Ikai I, Kudo M, Arii S, Omata M, Kojiro M, Sakamoto M, Takayasu K, Hayashi N, Makuuchi M, Matsuyama Y and Monden M. Report of the 18th follow-up survey of primary liver cancer in Japan. Hepatology Research 2010 40; 1043-1059.