Article History
Received: 23 April 2020
Accepted: 7 July 2020
First Online: 22 July 2020
Compliance with ethical standards
:
: The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
: None.
: The study was approved by the Ethics Committee of the People’s Hospital 115. The study was conducted according to the ethical principles of the Declaration of Helsinki, and all participants gave written informed consent.
: The manuscript does not contain any individual person’s data in any form.