Funding for this research was provided by:
National Natural Science Foundation of China (81801054)
the Natural Science Foundation of Jiangsu Province (BK20180166)
the Wuxi municipal health and Family Planning Commission Fund (Q201722)
Received: 20 January 2020
Accepted: 31 August 2020
First Online: 12 September 2020
Ethics approval and consent to participate
: This study was approved by Ethics Committee of the Affiliated Wuxi No. 2 People’s Hospital of Nanjing Medical University.
: Not applicable.
: The authors declare that they have no competing interests.