Peng, Hui
Yang, Tianbao
Whitaker, Bruce D
Trouth, Frances
Shangguan, Lingfei
Dong, Wen
Jurick, Wayne M
Article History
Received: 1 July 2016
Revised: 30 October 2016
Accepted: 30 October 2016
First Online: 7 December 2016
Competing interests
: The authors declare no conflict of interest.