論文（英文）
Kokudo T, Hasegawa K, Matsuyama Y, Takayama T, Izumi N, Kadoya M, Kudo M, Kubo S, Sakamoto M, Nakashima O, Kumada T, Kokudo N; Liver Cancer Study Group of Japan. Liver resection for hepatocellular carcinoma associated with hepatic vein invasion: a Japanese nationwide survey
Kokudo T, Hasegawa K, Matsuyama Y, Takayama T, Izumi N, Kadoya M, Kudo M, Kubo S, Sakamoto M, Nakashima O, Kumada T, Kokudo N; Liver Cancer Study Group of Japan. Liver resection for hepatocellular carcinoma associated with hepatic vein invasion: a Japanese nationwide survey. Hepatology. 2017;66(2):510-7.