Funding for this research was provided by:
Japan Agency for Medical Research and Development (JP18cm010653, JP18am0301011, JP18ak0101096, JP17cm0106514)
Received: 21 September 2017
Accepted: 26 April 2019
First Online: 28 May 2019
Ethics approval and consent to participate
: This study was approved by the institutional review boards of the University of Tokyo and Tokyo Medical and Dental University. Ninety frozen specimens of gastric cancer surgically resected between 2009 and 2016 at the University of Tokyo Hospital were analyzed in this study with written, informed consent from the patients.
: Not applicable.
: The authors declare that they have no competing interests.
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