| Name | Info | Provider | Link |
|---|---|---|---|
| Full text from DIGITALCSIC | free resource | Digital CSIC Spanish National Research Council | http://hdl.handle.net/10261/207977 |
| subscription/membership/fee required | Elsevier Science | https://linkinghub.elsevier.com/retrieve/pii/S0306-4522(19)30042-9 | |
| Multiple Sclerosis | free resource | MedlinePlus Health Information | https://medlineplus.gov/multiplesclerosis.html |
| subscription/membership/fee required | ClinicalKey | https://www.clinicalkey.com/content/playBy/pii?v=S0306-4522(19)30042-9 |