1. 1) Alsharif W, Qurashi A. 2021. Effectiveness of COVID-19 diagnosis and management tools: a review. Radiography 27: 682-687.
2. 2) WHO. WHO coronavirus (covid-19) dashboard. Available at: https://covid19.who.int/ (access on: 01 September 2023).
3. 3) Singh N, Chawla HV, Kumar A, Singh S. 2022. Role of vitamin A supplementation in prevention and control of coronavirus disease-19: A narrative review. Int J Prev Med 13: 122.
4. 4) Stephensen CB, Lietz G. 2021. Vitamin A in resistance to and recovery from infection: relevance to SARS-CoV2. Br J Nutr 126: 1663-1672.
5. 5) Bost M, Richard E, Redonnet-Vernhet I, Parant F, Bolet L, Dupré, T, Collin-Chavagnac D, Mesli S, Beauvieux MC. 2022. Review of nutritional components in Covid-19: what about micronutrients?. Ann Biol Clin 80: 319-331.