Funding for this research was provided by:
the key Clinical Specialty Discipline Construction Program of Fujian, P.R.C ([(2017)739])
the Research Project of Science and Technology Department of Fujian Province, China (2018J01288)
the Youth Research Project of Health and Family Planning Commission of Fujian Province, China (2018-1-62)
the Youth Research Project of Health and Family Planning Commission of Fujian Province, China (2018-2-23)
the Quanzhou Science and Technology Project (2018N012)
the Research Project of Collaborative Innovation Center for Maternal and Infant Health Service Application Technology (XJM1802)
Received: 25 November 2020
Accepted: 13 January 2021
First Online: 22 February 2021
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of the Second Affiliated Hospital of Fujian Medical University. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.