Funding for this research was provided by:
Kunshan City Social Development Science and Technology Project (KS1746)
Article History
Received: 4 May 2020
Accepted: 18 July 2020
First Online: 31 July 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: We confirmed that all methods in our study were performed in accordance with the relevant guidelines of CONSORT 2010.
: For this type of study, no informed consent is required.