Koyama, Shingo
Sato, Hidenori
Kobayashi, Ryota
Kawakatsu, Shinobu
Kurimura, Masayuki
Wada, Manabu
Kawanami, Toru
Kato, Takeo
Article History
Received: 10 April 2017
Accepted: 25 August 2017
First Online: 21 September 2017
Competing Interests
: The authors declare that they have no competing interests.