Nagai, Kenjiro
Horita, Nobuyuki
Yamamoto, Masaki
Tsukahara, Toshinori
Nagakura, Hideyuki
Tashiro, Ken
Shibata, Yuji
Watanabe, Hiroki
Nakashima, Kentaro
Ushio, Ryota
Ikeda, Misako
Narita, Atsuya
Kanai, Akinori
Sato, Takashi
Kaneko, Takeshi
Article History
Received: 16 May 2016
Accepted: 17 November 2016
First Online: 13 December 2016
Competing interests
: The authors declare no competing financial interests.