Zhao, H. B.
Hu, C. J.
Cheng, H. W.
Fang, J. H.
Xie, Y. P.
Fang, W. Y.
Doan, T. N. L.
Hoang, T. K. A.
Xu, J. Q.
Chen, P.
Article History
Received: 11 February 2016
Accepted: 20 April 2016
First Online: 12 May 2016
Competing interests
: The authors declare no competing financial interests.