Hu, Yu-Chuan
Yan, Lin-Feng
Wu, Lang
Du, Pang
Chen, Bao-Ying
Wang, Liang
Wang, Shu-Mei
Han, Yu
Tian, Qiang
Yu, Ying
Xu, Tian-Yong
Wang, Wen
Cui, Guang-Bin
Article History
Received: 20 August 2014
Accepted: 10 November 2014
First Online: 1 December 2014
Competing interests
: T-YX is an employee of GE healthcare Greater China. All other authors declare no conflict of interests.