Zhao, Lili
Miao, Lei
Liu, Chengyan
Li, Chao
Asaka, Toru
Kang, Yipu
Iwamoto, Yuji
Tanemura, Sakae
Gu, Hui
Su, Huirong
Article History
Received: 9 September 2014
Accepted: 23 October 2014
First Online: 11 November 2014
Competing interests
: The authors declare no competing financial interests.