Yang, E.
Hengshu, Zhang http://orcid.org/0000-0003-4134-147X
Article History
Received: 2 April 2019
Accepted: 3 November 2019
First Online: 25 November 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest to disclose.
: The Ethics Committee of the First Affiliated Hospital of Chongqing Medical University approved the study. It is also studied in accordance with the ethical guidelines established in the Helsinki Declaration.
: All patients gave informed consent to the study and publication and have signed relevant informed consent.
: No financial support for this study.