Kumar, Raj, Sweta S. Kumar, Adesh Kumar, and Prateek Jain. “Effect of Frequent Hand Washing for COVID-19 Prevention”. International Journal of Research in Medical Sciences 8, no. 11 (October 28, 2020): 3969–3973. Accessed October 12, 2025. https://www.msjonline.org/index.php/ijrms/article/view/8754.