Wang, Hui
Tao, Yong
Funding for this research was provided by:
1351 talent training plan of Beijing Chaoyang Hospital (CYXX-2017-21)
Article History
Received: 10 February 2019
Accepted: 31 July 2019
First Online: 16 August 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the local ethics committee of Beijing Chaoyang Hospital and with the 2013 Helsinki declaration. Written informed consent was obtained from each patient before the study.
: Not applicable.
: The authors declare that they have no competing interests.