論文（英文）
Treatment optimization for hepatocellular carcinoma in elderly patients in a Japanese nationwide cohort
Kaibori M, Yoshii K, Hasegawa K, Ogawa A, Kubo S, Tateishi R, Izumi N, Kadoya M, Kudo M, Kumada T, Sakamoto M, Nakashima O, Matsuyama Y, Takayama T, Kokudo N; Liver Cancer Study Group of Japan. Treatment optimization for hepatocellular carcinoma in elderly patients in a Japanese nationwide cohort. Ann Surg. 2019; 270(1): 121-130.