Shimizu, Yoshitaka
Ogawa, Yasushi
Sugiura, Kazumitsu
Takeda, Jun-ichi
Sakai-Sawada, Kaori
Yanagi, Teruki
Kon, Atsushi
Sawamura, Daisuke
Shimizu, Hiroshi
Akiyama, Masashi
Article History
Received: 10 June 2014
Accepted: 3 October 2014
First Online: 23 October 2014
Competing interests
: The authors declare no competing financial interests.