Nishioka, Junko
Shima, Hirohito
Fukami, Maki
Yatsuga, Shuichi
Matsumoto, Takako
Ushijima, Kikumi
Kitamura, Miyuki
Koga, Yasutoshi
Article History
Received: 24 December 2016
Revised: 8 March 2017
Accepted: 9 March 2017
First Online: 18 May 2017
Competing interests
: The authors declare no conflict of interest.