Nakamura, Takashi
Kuroi, Moeka
Fujiwara, Yuki
Warashina, Shota
Sato, Yusuke
Harashima, Hideyoshi
Article History
Received: 8 July 2016
Accepted: 31 October 2016
First Online: 28 November 2016
Competing interests
: The authors declare no competing financial interests.