Article History
Received: 23 August 2019
Accepted: 9 August 2020
First Online: 5 September 2020
Ethics approval and consent to participate
: The research protocol of this study was approved by the Ethics Committee of the Children’s Hospital of Nanjing Medical University. The written informed consent to participate for all the subjects in this study was provided by their parents, guardians, or next of kin.
: The written informed consent to publish for all the subjects in this study was provided by their parents, guardians, or next of kin.
: There are no potential conflicts with any person or organization regarding this study.