1. (2023, February 07). WHO Coronavirus (COVID-19) Dashboard|WHO Coronavirus (COVID-19) Dashboard with Vaccination Data. Available online: https://covid19.who.int/.
2. (2023, February 07). Newborn Mortality. Available online: https://www.who.int/news-room/fact-sheets/detail/levels-and-trends-in-child-mortality-report-2021.
3. (2023, February 07). COVID-19 Vaccination for Children|CDC, Available online: https://www.cdc.gov/vaccines/covid-19/planning/children.html.
4. Dimitroglou, M., Iliodromiti, Z., Christou, E., Volaki, P., Petropoulou, C., Sokou, R., Boutsikou, T., and Iacovidou, N. (2022). Human Breast Milk: The Key Role in the Maturation of Immune, Gastrointestinal and Central Nervous Systems: A Narrative Review. Diagnostics, 12.
5. (2022, November 14). Clinical Management of COVID-19: Interim Guidance, 27 May 2020. Available online: https://apps.who.int/iris/handle/10665/332196.