Zeng, L
Morinibu, A
Kobayashi, M
Zhu, Y
Wang, X
Goto, Y
Yeom, C J
Zhao, T
Hirota, K
Shinomiya, K
Itasaka, S
Yoshimura, M
Guo, G
Hammond, E M
Hiraoka, M
Harada, H
Article History
Received: 1 June 2014
Revised: 20 September 2014
Accepted: 20 October 2014
First Online: 22 December 2014
Competing interests
: The authors declare no conflict of interest.