Received: 6 October 2019
Accepted: 3 February 2020
First Online: 14 February 2020
Ethics approval and consent to participate
: All subjects in both studies gave their written informed consent to participate in this study. The study was performed according to the protocol approved by the Ethics Review Committee of Nagoya City University Graduate School of Medical Sciences and Nagoya City University Hospital (approved no. 60-16-0173).
: Not applicable.
: The authors declare that they have no competing interests.