Yamasaki, Hirohito
Odamura, Aya
Makihata, Yousuke
Fukunaga, Kimitoshi
Article History
Received: 23 September 2016
Revised: 13 December 2016
Accepted: 21 December 2016
First Online: 8 February 2017
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.