The peopling of Korea revealed by analyses of mitochondrial DNA and Y-chromosomal markers.

PLoS One · 2009 · PMC2615218 · PMID 19148289

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highly significantno p-value reported

When samples were grouped into northeast Asians and southeast Asians (excluding Koreans), a highly significant difference was found between the two groups with all markers.

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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.