Tumor markers are more useful in patients undergoing surveillance for hepatocellular carcinoma with unreliable results by ultrasonography

Shintaro Mikami, Ryosuke Tateishi, Shu Hagiwara, Masaya Sato, Tatsuya Minami, Koji Uchino, Kenichiro Enooku, Takahisa Sato, Hayato Nakagawa, Ryota Masuzaki, Yoshinari Asaoka, Yuji Kondo, Shuichiro Shiina, Hitoshi Ikeda, Masao Omata, Haruhiko Yoshida, Kazuhiko Koike