Luo, Jin
Zhu, Yongqiang
Guo, Qinghai
Tan, Long
Zhuang, Yaqin
Liu, Mingliang
Zhang, Canhai
Xiang, Wei
Rohn, Joachim
Article History
Received: 30 August 2016
Accepted: 29 November 2016
First Online: 5 January 2017
Competing interests
: The authors declare no competing financial interests.