| Name | Info | Provider | Link |
|---|---|---|---|
| Tears | free resource | MedlinePlus Health Information | https://medlineplus.gov/tears.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=18650659.ui | |
| free resource | NCI CPTAC Assay Portal | https://assays.cancer.gov/CPTAC-219 | |
| subscription/membership/fee required | Wolters Kluwer | https://doi.org/10.1097/ICO.0b013e31816a3591 |