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Authors
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Funding
Funding for this research was provided by:
Children's Hospital of Chongqing Medical University and Chongqing City Health and Family Planning Committee (Grant no. 2016MSXM033)
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Article History
Received: 5 February 2021
Accepted: 5 April 2021
First Online: 12 July 2021
Declarations
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: This prospective study involving human participants was in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standard. The protocol was approved by the Institutional Review Board, Children’s Hospital of Chongqing Medical University (reference no. 2020146).
: Not applicable.
: The authors declare no potential conflicts of interest.
