Murai, Fumihiko
Koinuma, Daizo
Shinozaki-Ushiku, Aya
Fukayama, Masashi
Miyaozono, Kohei
Ehata, Shogo
Article History
Received: 22 February 2015
Accepted: 3 August 2015
First Online: 22 September 2015
Competing interests
: The authors declare no conflict of interest.