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. 2017 Dec 7;23(45):7989–7999. doi: 10.3748/wjg.v23.i45.7989

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©The Author(s) 2017. 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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Injection concertation optimization by standard score. The standard score was used in this study to compare the reliability and efficiency of animal models. The normal distribution of groups A, B, and C is shown in upper panel. A standard score of 1.39 of group B indicates that its performance was better compared with groups A (1.02) and C (0.91).