| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Ediciones Doyma, S.L. | http://www.elsevier.es/en/linksolver/ft/ivp/0210-5705/30/511 | |
| subscription/membership/fee required | Elsevier Science | https://linkinghub.elsevier.com/retrieve/pii/13111681 | |
| Ulcerative Colitis | free resource | MedlinePlus Health Information | https://medlineplus.gov/ulcerativecolitis.html |