Saito, Yuichi
Kitahara, Hideki
Shoji, Toshihiro
Tokimasa, Satoshi
Nakayama, Takashi
Sugimoto, Kazumasa
Fujimoto, Yoshihide
Kobayashi, Yoshio
Article History
Received: 28 September 2017
Accepted: 9 February 2018
First Online: 12 February 2018
Compliance with ethical standards
:
: The authors declare that they have no competing interests.