Song, Hao
Lavoie, Michel
Fan, Xiaoji
Tan, Hana
Liu, Guangfu
Xu, Pengfei
Fu, Zhengwei
Paerl, Hans W
Qian, Haifeng
Article History
Received: 25 October 2016
Revised: 15 January 2017
Accepted: 16 February 2017
First Online: 11 April 2017
Competing interests
: The authors declare no conflict of interest.