Exhaled Breath Condensate-A Non-Invasive Approach for Diagnostic Methods in Asthma.

J Clin Med · 2021 · PMC8235112 · PMID 34207327

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may be significantno p-value reported

What may be significant, especially in the context of asthmatic patients, is that the one-way valve prevents the inhalation of cold air by the patient through the condenser and then prevents unintentional cold air challenge [ 9 ].

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