Funding for this research was provided by:
Basic Applied Research in Sichuan Province (2019YJ0086)
Chengdu Science and Technology Innovation R&D Project (2019-YF05-00448-SN)
Hospital Clinical Research Fund Project in West China Second University Hospital, Sichuan University (KL024)
Received: 30 September 2020
Accepted: 22 December 2020
First Online: 13 January 2021
Ethics approval and consent to participate
: The current study was reviewed and qualified as an exemption by the Institutional Review Board of West China Second Hospital of Sichuan University, Chengdu, China (number 2020068). Trial registration: 2020068. Registered March 1 2020, ExternalRef removed. All study participants provided an informed written consent included the records of hospital.
: Consent to publish clinical details of the mothers and babies included in the current study was obtained from the mothers.
: The authors declare that they have no competing interests.