Funding for this research was provided by:
A grant for research from the Kanagawa Institute of Industrial Science and Technology
Received: 6 May 2020
Accepted: 5 August 2020
First Online: 17 August 2020
Ethics approval and consent to participate
: Ethical approval of this trial was obtained from the Ethics committee of YCU Hospital on 30 May 2017. The study protocol and informed consent documents were approved by the YCU Hospital ethics committee. This trial has been registered in the University Hospital Medical Information Network (UMIN) Clinical Trials Registry as UMIN000029926. All study participants will submit a written study participation informed consent form.
: Not applicable.
: The authors declare that they have no conflicts of interests.