Hong, Bing
Gasse, Françoise
Uchida, Masao
Hong, Yetang
Leng, Xuetian
Shibata, Yasuyuki
An, Ning
Zhu, Yongxuan
Wang, Yu
Article History
Received: 3 January 2014
Accepted: 16 May 2014
First Online: 13 June 2014
Competing interests
: The authors declare no competing financial interests.