Folate intake along with genetic polymorphisms in methylenetetrahydrofolate reductase and thymidylate synthase in patients with advanced gastric cancer

Kohei Shitara, Kei Muro, Seiji Ito, Akira Sawaki, Masahiro Tajika, Hiroki Kawai, Tomoya Yokota, Daisuke Takahari, Takashi Shibata, Takashi Ura, Hidemi Ito, Satoyo Hosono, Takakazu Kawase, Miki Watanabe, Kazuo Tajima, Yasushi Yatabe, Hideo Tanaka, Keitaro Matsuo