Funding for this research was provided by:
Japan Society for the Promotion of Science (15K01407)
Article History
Received: 11 February 2019
Revised: 2 June 2019
Accepted: 3 June 2019
First Online: 25 June 2019
Compliance with ethical standards
:
: The protocol was reviewed and approved by our hospital’s research ethics committee. We certify that all applicable institutional and governmental regulations concerning the ethical use of human participants in research were followed.
: The authors declare that they have no conflict of interest.