Wang, Yuqin
Fukuda, Tomohiko
Isaji, Tomoya
Lu, Jishun
Gu, Wei
Lee, Ho-hsun
Ohkubo, Yasuhito
Kamada, Yoshihiro
Taniguchi, Naoyuki
Miyoshi, Eiji
Gu, Jianguo
Article History
Received: 16 September 2014
Accepted: 14 January 2015
First Online: 5 February 2015
Competing interests
: The authors declare no competing financial interests.