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Authors
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Funding
Funding for this research was provided by:
the clinical research project of COVID-19 in Chongqing Medical University (0064)
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Article History
Received: 6 May 2020
Accepted: 15 October 2020
First Online: 20 October 2020
Compliance with ethical standards
: The study was conducted in accordance with the Declaration of Helsinki, the protocol was approved by the Institutional Review Board of Children’s Hospital, Chongqing Medical University, and the requirement for written informed consent was waived because of the retrospective design.
: The authors declare that they have no competing interests.
Free to read: This content has been made available to all.
