Ma, Youqiao
Zhou, Jun
Pištora, Jaromír
Eldlio, Mohamed
Nguyen-Huu, Nghia
Maeda, Hiroshi
Wu, Qiang
Cada, Michael
Article History
Received: 20 June 2016
Accepted: 14 November 2016
First Online: 7 December 2016
Competing interests
: The authors declare no competing financial interests.