Funding for this research was provided by:
HuaShan North Hospital Research Initiation Fund (HSBY2016009)
Received: 28 January 2020
Accepted: 22 July 2020
First Online: 5 August 2020
Ethics approval and consent to participate
: The study described was approved by the HuaShan Hospital ethics committee. All procedures performed in studies involving human participants were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. All participants were informed in writing and verbally of the procedures and purpose of this study, and signed written informed consent forms.
: Not applicable.
: The authors declare no editorial or financial conflicts of interests.