| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Ingenta plc | https://www.ingentaconnect.com/openurl?genre=article&issn=&volume=14&issue=1&spage=22&aulast=Castro | |
| Mercury | free resource | MedlinePlus Health Information | https://medlineplus.gov/mercury.html |
| subscription/membership/fee required | Bentham Science Publishers Ltd. | https://www.eurekaselect.com/62395/article |