| Name | Info | Provider | Link |
|---|---|---|---|
| free resource | Atypon | https://www.pnas.org/doi/abs/10.1073/pnas.2116932119?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed | |
| Vaccines | free resource | MedlinePlus Health Information | https://medlineplus.gov/vaccines.html |
| free resource | PubMed Central | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/35131899/ | |
| free resource | Europe PubMed Central | https://europepmc.org/abstract/MED/35131899 |