Wang, Jian
Farris, Alton B.
Xu, Kaiming
Wang, Ping
Zhang, Xiangming
Duong, Duc M.
Yi, Hong
Shu, Hui-Kuo
Sun, Shi-Yong
Wang, Ya
Article History
Received: 8 March 2016
Accepted: 28 April 2016
First Online: 8 June 2016
Competing interests
: The authors declare no competing financial interests.