Abe, Tomoyuki
Shirabe, Ken
Harimoto, Norifumi
Gion, Tomonobu
Nagaie, Takashi
Kajiyama, Kiyoshi
Article History
Received: 15 October 2016
Accepted: 9 December 2016
First Online: 13 January 2017
Conflict of interest
: T. Abe, K. Shirabe, N. Harimoto, T. Gion, T. Nagaie, and K. Kajiyama declare that they have no competing interests.