| Name | Info | Provider | Link |
|---|---|---|---|
| Shock | free resource | MedlinePlus Health Information | https://medlineplus.gov/shock.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=34547801.ui | |
| subscription/membership/fee required | Georg Thieme Verlag Stuttgart, New York | https://www.thieme-connect.com/DOI/DOI?10.1055/s-0041-1735464 |