Bleeding Risk Related to Upper Gastrointestinal Endoscopic Biopsy in Patients Receiving Antithrombotic Therapy: A Multicenter Prospective Observational Study by Takafumi Yuki, MD, PhD, Shunji Ishihara, MD, PhD, Kazuo Yashima, MD, PhD, Koichiro Kawaguchi, MD, PhD, Hirofumi Fujishiro, MD, PhD, Youichi Miyaoka, MD, PhD, Mika Yuki, MD, PhD, Yoshinori Kushiyama, MD, PhD, Akiko Yasugi, MD, PhD, Michiko Shabana, MD, PhD, Koichirou Furuta, MD, PhD, Kiwamu Tanaka, MD, PhD, Masaharu Koda, MD, PhD, Tetsuro Hamamoto, MD, PhD, Yuichiro Sasaki, MD, PhD, Hisao Tanaka, MD, PhD, Teiji Yoshimura, MD, Yoshikazu Murawaki, MD, PhD, Hajime Isomoto, MD, PhD, Yoshikazu Kinoshita, MD, PhD

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