AGARWAL, B., S. AGARWALL, K. ARORA, and K. K. SINGH. “ROLE OF OZONE THERAPY IN MANAGEMENT OF COVID-19 ILLNESS: A SYSTEMATIC REVIEW AND POOLED ANALYSIS OF PRELIMINARY EVIDENCE USING META-ANALYTICAL APPROACH”. Journal of Disease and Global Health, Vol. 14, no. 2, July 2021, pp. 1-12, https://www.ikprress.org/index.php/JODAGH/article/view/6655.