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A critical evaluation of lymph node ratio in head and neck cancer.
de Ridder M, Marres CC, Smeele LE, van den Brekel MW, Hauptmann M, Balm AJ, van Velthuysen ML. de Ridder M, et al. Virchows Arch. 2016 Dec;469(6):635-641. doi: 10.1007/s00428-016-2015-9. Epub 2016 Sep 18. Virchows Arch. 2016. PMID: 27639568
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