Berki, L. T., and B. F. Pikó. “Sedentary Lifestyle May Contribute to the Risk of Depression During the COVID-19 Pandemic: A Snapshot of Hungarian Adolescents”. European Journal of Mental Health, vol. 16, no. 2, Dec. 2021, pp. 99-119, doi:10.5708/EJMH.16.2021.2.5.