Name | Info | Provider | Link |
---|---|---|---|
subscription/membership/fee required | Elsevier Science | https://linkinghub.elsevier.com/retrieve/pii/S0929-693X(08)00365-5 | |
Gastrointestinal Bleeding | free resource | MedlinePlus Health Information | https://medlineplus.gov/gastrointestinalbleeding.html |