Funding for this research was provided by:
Japan Society for the Promotion of Science (17H04266)
Uehara Memorial Foundation (N/A)
Text and Data Mining valid from 2019-11-11
Received: 5 August 2019
Accepted: 31 October 2019
First Online: 11 November 2019
Ethics approval and consent to participate
: The present study was approved by the Institutional Review Board of the School of Medicine, Keio University (ID#20150293), and informed consent was obtained from all participants.
: The approval of the Institutional Review Board included the consent for publication of any individual data.
: The authors declare that they have no competing interests.