Kiyohara, Kosuke
Wake, Kanako
Watanabe, Soichi
Arima, Takuji
Sato, Yasuto
Kojimahara, Noriko
Taki, Masao
Yamaguchi, Naohito
Article History
Received: 31 July 2014
Revised: 24 November 2014
Accepted: 31 December 2014
First Online: 18 March 2015
Competing interests
: The authors declare no conflict of interest.