Funding for this research was provided by:
National Natural Science Foundation of China (81672188)
Health and Family Planning Commission of Hunan Province (B20180313)
Received: 14 July 2020
Accepted: 14 October 2020
First Online: 21 October 2020
Ethics approval and consent to participate
: This study was approved by the medical ethics committee of the Second Xiangya Hospital Central South University. All patients involved in this study gave informed written consent to participate.
: Written informed consent was obtained from all participants.
: The authors declare that they have no competing interests.