Kay Lo Ip, Vincent. “THE ‘FLU SEASONS’ AND THE MISSING DATA: A MATCHED-PAIR ANALYSIS FOR THE PANDEMIC SEASON 2019_2020”. International Journal of Research -GRANTHAALAYAH 9, no. 8 (September 6, 2021): 268–281. Accessed December 2, 2022. https://www.granthaalayahpublication.org/journals/granthaalayah/article/view/4129.