Kumar S, Mir YY, Singh G, Devadharshini S, Thongam G, Agnihotri BK. The rise of online learning during the pandemic: a study of its challenges and opportunities. Int. J. of Health Sci. [Internet]. 2022 Apr. 29 [cited 2024 Aug. 18];6(S3):4169-87. Available from: https://sciencescholar.us/journal/index.php/ijhs/article/view/6761