Yasui, Takao
Ogawa, Kensuke
Kaji, Noritada
Nilsson, Mats
Ajiri, Taiga
Tokeshi, Manabu
Horiike, Yasuhiro
Baba, Yoshinobu
Article History
Received: 6 April 2016
Accepted: 21 July 2016
First Online: 17 August 2016
Competing interests
: The authors declare no competing financial interests.