. 2019 Jun 29;4(8):343–350. doi: 10.1016/j.vgie.2019.03.010
© 2019 by the American Society for Gastrointestinal Endoscopy. Published by Elsevier, Inc.
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).