Zhu, Yuchen
An, Zhongcheng
Zhang, Yingjian
Wei, Hao
Dong, Liqiang
Article History
Received: 10 October 2019
Accepted: 18 December 2019
First Online: 3 January 2020
Ethics approval and consent to participate
: This study has obtained ethics approval of the ethics committee in our hospital and informed consent of all participants (ethical approval number: 2019-KL-141-01).
: Not applicable.
: The authors declare that they have no competing interests.