Yamada, Shimpei
Sanada, Yusuke
Fujii, Shota
Kitahara, Ikumi
Akiba, Isamu
Ishi-I, Tsutomu
Sakurai, Kazuo
Article History
Received: 6 January 2016
Revised: 5 April 2016
Accepted: 7 April 2016
First Online: 8 June 2016
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.