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. 2023 Oct 26;11(30):7329–7336. doi: 10.12998/wjcc.v11.i30.7329

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©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (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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Spontaneous sleep position and nocturnal reflux symptoms. A: Acid exposure time (% time pH<4) in left lateral decubitus (LLD) vs right lateral decubitus (RLD); B: LLD vs supine; C: Supine vs RLD. LLD: Left lateral decubitus; MD: Mean difference; RLD: Right lateral decubitus; SD: Standard deviation; 95%-CI: 95% confidence interval.