Sijun Chen

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BACKGROUND Current American Society of Clinical Oncology/College of American Pathologists guidelines define HER2-positive tumors as those with >6 HER2 genes per nucleus or those with HER2/CEP17 (chromosome 17) ratio>2.2. These guidelines are potentially contradictory in tumors with polysomy of chromosome 17. The current study was performed to determine the(More)
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