論文（英文）
Demonstration of quality of care measurement using the Japanese liver cancer registry.
Higashi T, Hasegawa K, Kokudo N, Makuuchi M, Izumi N, Ichida T, Kudo M, Ku Y, Sakamoto M, Nakashima O, Matsui O, Matsuyama Y, Sobue T; the Liver Cancer Study Group of Japan. Demonstration of quality of care measurement using the Japanese liver cancer registry. Hepatology Research 2011; 41(12): 1208-1215.