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. 2020 Sep 28;26(36):5508–5519. doi: 10.3748/wjg.v26.i36.5508

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©The Author(s) 2020. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial.

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Comparison of gastrointestinal hormone levels. A: The preoperative and postoperative day 5 serum gastrin levels in the early oral feeding group and the control group. The postoperative day 5 serum gastrin levels were significantly different between the two groups (P = 0.001); B: The preoperative and postoperative day 5 serum motilin levels in the early oral feeding group and the control group. The postoperative day 5 serum motilin levels were significantly different between the two groups (P = 0.002).