1. 1. An official website of the Verkhovna Rada of Ukraine. Order of the Ministry of Health of Ukraine of November 24, 2005 № 640 “About realization of the project “Support of development of system of medical standards”. https://zakon.rada.gov.ua/rada/show/v0640282-05#Text [date access 18.07.2021].
2. 2. Council of Europe Portal. Recommendation Rec(2001)13 of the Committee of Ministers to member states on developing a methodology for drawing up guidelines on best medical practices. https://search.coe. int/cm/Pages/result_details.aspx?ObjectID=09000016804f8e51 [date access 18.07.2021].
3. 3. WHO. Coronavirus disease (COVID-19) /Technical Guidance. https:// www.who.int/emergencies/diseases/novel-coronavirus-2019/ technical-guidance [date access 18.07.2021].
4. 4. ECDC. COVID-19. https://www.ecdc.europa.eu/en/covid-19 [date access 18.07.2021].
5. 5. NICE, UK Developing NICE guidelines: the manual. Process and methods. https://www.nice.org.uk/process/pmg20/chapter/introduction [date access 18.07.2021].