Funding for this research was provided by:
Shenzhen Healthcare Research Project (SZLY2018014)
Received: 28 March 2020
Accepted: 23 July 2020
First Online: 7 August 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Shenzhen Children’s Hospital (No. N2019056). All study procedures were conducted in accordance with the tenets of the Declaration of Helsinki, and its subsequent amendments.
: Not applicable.
: The authors declare that they have no competing interests.