Funding for this research was provided by:
Ministry of Health, Labour and Welfare
Japan Society for the Promotion of Science
Japan Agency for Medical Research and Development
Received: 1 February 2019
Accepted: 22 April 2019
First Online: 2 May 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Tokyo University Hospital. We obtained written informed consent from all participants before surgery.
: All participants provided written informed consent to publish the information.
: The authors declare that they have no competing interests.
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