Funding for this research was provided by:
National Natural Science Foundation of China (81802642)
Article History
Received: 15 November 2019
Accepted: 5 May 2020
First Online: 13 May 2020
Compliance with ethical standards
:
: The authors have no conflict of interest to disclose.
: This article is a review and does not contain any studies with human participants performed by any of the authors.
: Informed consent was obtained from all individual participants included in the RCTs.