Funding for this research was provided by:
National Natural Science Foundation of China (81670883, 81170884)
Received: 3 September 2020
Accepted: 28 January 2021
First Online: 6 February 2021
Ethics approval and consent to participate
: This prospective, randomized, clinical study was conducted in accordance with the Declaration of Helsinki and was approved by the Ethics Committee of Beijing Children’s Hospital. The clinical trial was registered in the Chinese Clinical Trial Registry (ChiCTR1900025243). All patients were fully informed of the purpose and methods of the present study, and written informed consent was obtained from their guardians.
: Not Applicable.
: The authors declare that they have no competing interests.