| Name | Info | Provider | Link |
|---|---|---|---|
| Managed Care | free resource | MedlinePlus Health Information | https://medlineplus.gov/managedcare.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=7661668.ui | |
| subscription/membership/fee required | Silverchair Information Systems | https://jamanetwork.com/journals/jamasurgery/fullarticle/vol/130/pg/929 |