1.
Gao J, Liu J, Feng H, Zhang Z. Relationship between Time Length of E-learning Environment Using and Physical Health of Elementary and Middle School Students. Best Evid Chin Educ [Internet]. 2019 Sep. 30 [cited 2026 May 14];3(1):277-86. Available from: https://bonoi.org/index.php/bece/article/view/71