Funding for this research was provided by:
National Natural Science Foundation of China (81502416)
Received: 6 July 2020
Accepted: 8 March 2021
First Online: 17 March 2021
: The study was approved by the Ethics Committee of all the study centers. Written informed consent was waived by the Ethics Commission of each hospital for emerging infectious.
: No individual participant data is reported that would require consent to publish from the participant (or legal parent or guardian for children).
: The authors declare that they have no competing interests.