Received: 24 December 2019
Accepted: 2 June 2020
First Online: 7 December 2020
Ethics approval and consent to participate
: This study was reviewed and filed by the Ethical Committee of West China Second University, all methods were performed in accordance with the relevant guidelines and regulations, and written informed consent was obtained from the guardians of the subjects (NO.20170508).
: Not Applicable.
: The authors declare no potential conflicts of interest.