Funding for this research was provided by:
Japan Society for the Promotion of Science (JP16K08869)
Text and Data Mining valid from 2018-08-16
Received: 23 February 2018
Accepted: 30 July 2018
First Online: 16 August 2018
Ethics approval and consent to participate
: This study was approved by the ethical committee of Nagoya University (approval number 2013–0132), (approval number 2016–0227). Informed consent was obtained from all participants in the study.
: Not applicable.
: The authors declare that they have no conflict of interest.
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