Obara, Taku
,
Ubeda, Sergio Ramón Gutiérrez
Ohkubo, Takayoshi
Matsuura, Hideo
Ishimitsu, Toshihiko
Takata, Masanobu
Rakugi, Hiromi
Imai, Yutaka
Article History
Received: 5 August 2014
Revised: 29 September 2014
Accepted: 2 December 2014
First Online: 2 April 2015
Competing interests
: The authors declare no conflict of interest.