| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Ingenta plc | https://www.ingentaconnect.com/openurl?genre=article&issn=&volume=138&issue=3&spage=312&aulast=Butler | |
| Pain | free resource | MedlinePlus Health Information | https://medlineplus.gov/pain.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=36637501.ui | |
| free resource | Silverchair Information Systems | https://pubs.asahq.org/anesthesiology/article-lookup/doi/10.1097/ALN.0000000000004444 |