Shibutani, Toshihiro
Ito, Shinsuke
Toda, Mariko
Kanao, Rie
Collins, Leonard B.
Shibata, Marika
Urabe, Miho
Koseki, Haruhiko
Masuda, Yuji
Swenberg, James A.
Masutani, Chikahide
Hanaoka, Fumio
Iwai, Shigenori
Kuraoka, Isao
Article History
Received: 3 January 2014
Accepted: 19 May 2014
First Online: 9 June 2014
Competing interests
: The authors declare no competing financial interests.