Bourdas, Dimitrios I., and Emmanouil D. Zacharakis. “Physical Activity: COVID-19 Enemy”. Archives of Clinical and Medical Case Reports 5, no. 1 (January 13, 2021): 84–90. Accessed June 15, 2026. https://fortunejournals.org/ojs/index.php/acmcr/article/view/22449.