Funding for this research was provided by:
Young Talent Development Plan of Changzhou Health Commission (CZQM2020061)
Talent Development Plan of Changzhou No.2 People′s hospital (YJRC202031)
Changzhou Science and Technique Program (CJ20190098)
Received: 14 November 2021
Accepted: 29 December 2021
First Online: 28 January 2022
: The study complied with the Declaration of Helsinki and was reviewed and approved by the Human Subjects Committee of Changzhou No. 2 People’s Hospital. Written informed consent was obtained from each couple enrolled in the study.
: This manuscript does not include any individual person’s data.
: The authors declared no conflict of interest.