| Name | Info | Provider | Link |
|---|---|---|---|
| free resource | BioMed Central | https://bmchealthservres.biomedcentral.com/articles/10.1186/s12913-022-07648-5 | |
| COVID-19 (Coronavirus Disease 2019) | free resource | MedlinePlus Health Information | https://medlineplus.gov/covid19coronavirusdisease2019.html |
| free resource | PubMed Central | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/35209892/ | |
| free resource | Europe PubMed Central | https://europepmc.org/abstract/MED/35209892 |