Wan, Chunlei
Gu, Xiaokun
Dang, Feng
Itoh, Tomohiro
Wang, Yifeng
Sasaki, Hitoshi
Kondo, Mami
Koga, Kenji
Yabuki, Kazuhisa
Snyder, G. Jeffrey
Yang, Ronggui
Koumoto, Kunihito
Article History
Received: 24 July 2014
Accepted: 19 February 2015
First Online: 6 April 2015
Competing interests
: The authors declare no competing financial interests.