Wu, Liyan
Luo, Zujin
Zheng, Jinxu
Yao, Peng
Yuan, Zhenyan
Lv, Xiaohong
Zhao, Jing
Wang, Min
Article History
First Online: 7 February 2018
Compliance with Ethical Standards
: The study was performed at Beijing Chao-Yang Hospital, Beijing, and Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province.
: The authors declare that they have no conflict of interest.