Funding for this research was provided by:
National Natural Science Foundation of China (81971645, 81571703)
Outstanding Young Talents Program of Shanghai Municipal Commission of Health and Family Planning (2017YQ027)
Major Grant of Research and Development Program of Hunan Province of China (2019SK2252)
Article History
Received: 28 April 2020
Accepted: 15 June 2020
First Online: 21 June 2020
Compliance with ethical standards
:
: The authors declare no competing financial interest.