Transdermal nicotine in non-smokers: A systematic review to design COVID-19 clinical trials.

Respir Med Res · 2021 · PMC8183099 · PMID 34153704

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showed a trendno p-value reported

The study on autism and ADHD showed a trend to improvement ( n = 1) or improvement ( n = 1).

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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.