| Name | Info | Provider | Link |
|---|---|---|---|
| Back Injuries | free resource | MedlinePlus Health Information | https://medlineplus.gov/backinjuries.html |
| subscription/membership/fee required | Sunmedia PierOnline | http://www.pieronline.jp/openurl?issn=0021-5252&volume=59&issue=4&spage=340 |