Kyoto classification risk scoring system and endoscopic grading of gastric intestinal metaplasia for gastric cancer: Multicenter observation study in Japan

Masashi Kawamura, Noriya Uedo, Tomoyuki Koike, Takashi Kanesaka, Waku Hatta, Yohei Ogata, Tomoyuki Oikawa, Wataru Iwai, Satoshi Yokosawa, Junya Honda, Sho Asonuma, Hideki Okata, Motoki Ohyauchi, Hirotaka Ito, Yasuhiko Abe, Nobuyuki Ara, Shoichi Kayaba, Hirohiko Shinkai, Toshio Shimokawa