Funding for this research was provided by:
National Natural Science Foundation of China (81601319)
Received: 12 February 2021
Accepted: 13 May 2021
First Online: 26 May 2021
: This work obtained the ethical approval of Jiaxing Xiuzhou District Maternal and Child Health Hospital for Women & Newborns Human Research Protection Office. Informed consent was obtained from all individual participants included in the study.
: Patients signed informed consent regarding publishing their data.
: The authors declare that they have no competing interests.