Received: 7 June 2021
Accepted: 20 October 2021
First Online: 1 November 2021
: This study was approved by the Ethics Committee of Shenyang Children’s Hospital and the written informed consents were obtained from every child’s parents or other guardians. All the procedures involving human samples were carried out in accordance with the Declaration of Helsinki.
: Not applicable.
: All the authors declare that there is no conflict of interest.