Li, Qi
Fan, Xiao
Huo, Ji-wen
Luo, Tian-you
Huang, Xing-tao
Gong, Jun-wei
Funding for this research was provided by:
Chongqing Health and Family Planning Commission (2017MSXM010, 2022MSXM147)
Chongqing Science and Technology Commission (cstc2017jcyjAX0281)
Article History
Received: 6 December 2021
Accepted: 20 February 2022
First Online: 22 March 2022
Declarations
:
: The study protocol was approved by the ethics committee of the First Affiliated Hospital of Chongqing Medical University, and the need for informed consent was waived because of the retrospective nature of this research.
: Not applicable.
: The authors declare that they have no competing interests.