Yang, J J
Zhou, Q
Yan, H H
Zhang, X C
Chen, H J
Tu, H Y
Wang, Z
Xu, C R
Su, J
Wang, B C
Jiang, B Y
Bai, X Y
Zhong, W Z
Yang, X N
Wu, Y L
Article History
Received: 31 July 2016
Revised: 18 December 2016
Accepted: 22 December 2016
First Online: 19 January 2017
Competing interests
: YLW received speaker fees from Eli Lilly, Roche, AstraZeneca, Pfizer, and Sanofi. The remaining authors declare that they have no competing interest.