Iba, Toshiaki
Hirota, Tatsuhiko
Sato, Koichi
Nagaoka, Isao
Funding for this research was provided by:
Grant from Ministry of Education, Culture, Sports, Science and Technology-Supported Program for the Strategic Research Foundation at Private Universities 2016.
Article History
Received: 12 September 2017
Revised: 3 January 2018
Accepted: 12 January 2018
First Online: 20 January 2018
Compliance with ethical standards
:
: The authors have no competing interests to declare.