| Name | Info | Provider | Link |
|---|---|---|---|
| Gastrointestinal Bleeding | free resource | MedlinePlus Health Information | https://medlineplus.gov/gastrointestinalbleeding.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=22108337.ui | |
| subscription/membership/fee required | Wiley | https://onlinelibrary.wiley.com/doi/10.1097/MPG.0b013e3182417a47 | |
| subscription/membership/fee required | Wolters Kluwer | https://doi.org/10.1097/MPG.0b013e3182417a47 |