Korean national athletes' knowledge, practices, and attitudes of doping: a cross-sectional study.

Subst Abuse Treat Prev Policy · 2017 · PMC5309985 · PMID 28196542

Europe PMC DOI

hedged sentence

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The sentences

a worrying trendno p-value reported

The increase of the use of substances to enhance sports-performance among adolescents and even pre-adolescents is a worrying trend because of the relatively unknown associated risks [ 13 , 14 ].

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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.