Photodynamic therapy in the management of potentially malignant and malignant oral disorders.

Head Neck Oncol · 2012 · PMC3629701 · PMID 22546491

Europe PMC DOI

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an increasing trendno p-value reported

However, there is an increasing trend of oral cancer affecting young people under the age of 45 years, accounting to about 6 % of all age groups.

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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.