Nojiri, Hiroshi
Ishida, Koichi
Yao, Xueqiu
Liu, Wei
Imokawa, Genji https://orcid.org/0000-0001-7312-4475
Article History
Received: 14 December 2017
Revised: 19 March 2018
Accepted: 23 April 2018
First Online: 4 May 2018
Compliance with ethical standards
:
: The authors state no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.