| Name | Info | Provider | Link |
|---|---|---|---|
| Vitamin A | free resource | MedlinePlus Health Information | https://medlineplus.gov/vitamina.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=21797934.ui | |
| subscription/membership/fee required | Wiley | https://doi.org/10.1111/j.1439-0396.2011.01196.x | |
| free resource | NCI CPTAC Assay Portal | https://assays.cancer.gov/non-CPTAC-3321 |