Clinical relevance of cell-free DNA in gastrointestinal tract malignancy.

Oncotarget · 2017 · PMC5356859 · PMID 27936467

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an increasing trendno p-value reported

For recurrent gastric cancer, a persistently high cfDNA level and an increasing trend was observed after surgery.

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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.