A prospective multicenter observational study evaluating the risk of periendoscopic events in patients using anticoagulants: the Osaka GIANT Study oleh Takuya Inoue, Hideki Iijima, Takuya Yamada, Yuji Okuyama, Kanae Takahashi, Tsutomu Nishida, Ryu Ishihara, Tomofumi Akasaka, Ichizo Kobayashi, Toshio Kuroshima, Yuichi Yasunaga, Katsumi Yamamoto, Masanori Nakahara, Yoshinori Doi, Sachiko Nakajima, Akira Mukai, Eiji Masuda, Shunsuke Yoshii, Yoshito Hayashi, Hitoshi Minamiguchi, Yasushi Sakata, Kouji Yamamoto, Masahiko Tsujii, Tetsuo Takehara