Zhang, Yuquan
Shi, Wei
Shen, Zhe
Man, Zhongsheng
Min, Changjun
Shen, Junfeng
Zhu, Siwei
Urbach, H. Paul
Yuan, Xiaocong
Article History
Received: 14 January 2015
Accepted: 23 September 2015
First Online: 20 October 2015
Competing interests
: The authors declare no competing financial interests.