| Name | Info | Provider | Link |
|---|---|---|---|
| free resource | Elsevier Science | https://linkinghub.elsevier.com/retrieve/pii/S0376-8716(99)00090-3 | |
| Opioids and Opioid Use Disorder (OUD) | free resource | MedlinePlus Health Information | https://medlineplus.gov/opioidsandopioidusedisorderoud.html |