Chromosomal alterations in exfoliated urothelial cells from bladder cancer cases and healthy men: a prospective screening study.

BMC Cancer · 2014 · PMC4247705 · PMID 25412927

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of marginal significanceno p-value reported

We observed slightly more cells with CNVs in tumor-free men who reported having ever smoked, but this was of marginal significance.

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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.