Yokoyama, Katsuaki
Tani, Shigemasa http://orcid.org/0000-0002-4966-7848
Matsuo, Rei
Matsumoto, Naoya
Article History
Received: 11 June 2018
Accepted: 17 August 2018
First Online: 23 August 2018
Compliance with ethical standards
:
: The author declares that he/she has no competing interests.