Chen, Jin
Yagi, Hisashi
Furutani, Yuji
Nakamura, Takashi
Inaguma, Asumi
Guo, Hao
Kong, Yan
Goto, Yuji
Article History
Received: 30 October 2013
Accepted: 18 June 2014
First Online: 8 July 2014
Competing interests
: The authors declare no competing financial interests.