Response of the airways and autonomic nervous system to acid perfusion of the esophagus in patients with asthma: a laboratory study.

BMC Pulm Med · 2013 · PMC3682888 · PMID 23724936

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showed a trendno p-value reported

It also showed that asthmatics with reflux showed a trend for a higher response to the other vagal tests and lower spirometry values in response to esophageal acid perfusion compared to those without reflux.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.