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Upper gastrointestinal endoscopy

NW Noritaka Wakui
HN Hidenari Nagai
YO Yu Ogino
KK Kojiro Kobayashi
DM Daigo Matsui
TM Takanori Mukozu
YM Yasushi Matsukiyo
TM Teppei Matsui
YD Yasuko Daido
KM Koichi Momiyama
MS Mie Shinohara
TK Takahide Kudo
KM Kenichi Maruyama
YS Yasukiyo Sumino
YI Yoshinori Igarashi
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Upper gastrointestinal endoscopy was performed using the GIF-Q260 system (Olympus Optical, Ltd., Tokyo, Japan). Endoscopic findings of EV were classified according to the General Rules for Recording Endoscopic Findings set by the Japan Research Society for Portal Hypertension [11]: form 0 (non); form 1 (straight), form 2 (winding), and form 3 (nodule-beaded), corresponding to the grades of small, medium, and large, respectively. Forms 1–3 were considered positive for EV.

Copyright and License information: The Author(s) ©2018
Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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