Dong, Ping
Wang, Lidan
Song, Na
Yang, Lina
Chen, Jin
Yan, Mingxue
Chen, Huiwen
Zhang, Rui
Li, Jincheng
Abdel-motaal, Heba
Jiang, Juquan
Article History
Received: 9 January 2017
Accepted: 7 March 2017
First Online: 4 April 2017
Competing interests
: The authors declare no competing financial interests.