| Name | Info | Provider | Link |
|---|---|---|---|
| Canker Sores | free resource | MedlinePlus Health Information | https://medlineplus.gov/cankersores.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=9178110.ui | |
| subscription/membership/fee required | Wiley | https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0303-6979&date=1997&volume=24&issue=5&spage=313 |