D. GK, C. SHRUSHTI, D. DEEKSHA, and C. PRASAD, “A REVIEW ON COVID-19: ORIGIN, SYMPTOMS, PRECAUTION, AND RECENT UPDATE OF COVID-19 AND DATABASE SURVEY OF EIGHT COUNTRIES ON PANDEMIC CORONAVIRUS DISEASE”, Innovare J Med Sci, vol. 8, no. 4, pp. 3–8, Jul. 2020.