Liu, Qiaozhen
Huang, Xiuzhen
Zhang, Hui
Tian, Xueying
He, Lingjuan
Yang, Rui
Yan, Yan
Wang, Qing-Dong
Gillich, Astrid
Zhou, Bin
Article History
Received: 18 February 2015
Accepted: 26 May 2015
First Online: 13 July 2015
Competing interests
: The authors declare no competing financial interests.