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Every article on Frontiers is peer reviewed, permanently archived and free to read.

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Original Research
Published 5 October 2026
FeNO may serve as a noninvasive screening tool for gastroesophageal reflux disease in children under 5 years: a retrospective study
Fang Wang · Ying Cheng · Xiaoqin Zhou · Junhua Shu · Lin Deng · Ruxin Zhang · Yi Gan · Zhongjian Wang
Frontiers in Pediatrics
doi 10.3389/fped.2026.1925154