Wang, Zongrui
Dong, Huanli
Li, Tao
Hviid, Rune
Zou, Ye
Wei, Zhongming
Fu, Xiaolong
Wang, Erjing
Zhen, Yonggang
Nørgaard, Kasper
Laursen, Bo W.
Hu, Wenping
Article History
Received: 13 September 2014
Accepted: 13 May 2015
First Online: 18 June 2015
Competing interests
: The authors declare no competing financial interests.