Complications of nasal and pharyngeal swabs: a relevant challenge of the COVID-19 pandemic?

Eur Respir J · 2021 · PMC7736753 · PMID 33303542

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a clear trendno p-value reported

A previously unimaginable number of these diagnostic procedures has been performed since the beginning of the pandemic and there is a clear trend towards further expanding the number of tests [3].

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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.