Deguchi, A
Tomita, T
Ohto, U
Takemura, K
Kitao, A
Akashi-Takamura, S
Miyake, K
Maru, Y
Article History
Received: 8 October 2014
Revised: 30 April 2015
Accepted: 4 May 2015
First Online: 13 July 2015
Competing interests
: The authors declare no conflict of interest.