en.wikipedia.org
en.wikipedia.org
who.int
eurohealthobservatory.who.int
European Observatory on Health Systems and Policies
https://eurohealthobservatory.who.int › docs › librariesprovider3 › country-health-profiles › chp2021pdf › bulgaria-countryhealthprofile2021.pdf?sfvrsn=2cd7799c_7&download=true
ourworldindata.org
Our World in Data
https://ourworldindata.org › coronavirus › country › bulgaria
journals.lww.com
ecdc.europa.eu
European Centre for Disease Prevention and Control
https://www.ecdc.europa.eu › en › publications-data › country-factsheet-bulgaria
pmc.ncbi.nlm.nih.gov
pmc.ncbi.nlm.nih.gov
https://pmc.ncbi.nlm.nih.gov › articles › PMC9696094
politico.eu
en.wikipedia.org
pubmed.ncbi.nlm.nih.gov
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