Kadota, Chika
Arimura, Takuro
Hayashi, Takeharu
Naruse, Taeko K
Kawai, Sachio
Kimura, Akinori
Article History
Received: 10 February 2015
Revised: 15 May 2015
Accepted: 15 June 2015
First Online: 16 July 2015
Competing interests
: The authors declare no conflict of interest.