| Name | Info | Provider | Link |
|---|---|---|---|
| free resource | Elsevier Science | https://linkinghub.elsevier.com/retrieve/pii/S0006-4971(20)61869-9 | |
| Hepatitis B | free resource | MedlinePlus Health Information | https://medlineplus.gov/hepatitisb.html |
| subscription/membership/fee required | Silverchair Information Systems | https://ashpublications.org/blood/article-lookup/doi/10.1182/blood.2020004907 |