Funding for this research was provided by:
National Natural Science Foundation of China (81800288)
National Key R&D Program of China (2018YFC1002301)
Science‐technology Support Plan Projects in Sichuan province (2019YFS0243, 2017SZ0117)
Received: 27 May 2020
Accepted: 4 March 2021
First Online: 12 March 2021
: Written informed consent was obtained from the parents following a full explanation of the nature of the study. The University Ethics Committee on Human Subjects at Sichuan University approved the study.
: Written consent obtained.
: None of authors declared any conflict of interests.