| Name | Info | Provider | Link |
|---|---|---|---|
| free resource | JMIR Publications | https://www.jmir.org/2018/10/e10412/ | |
| Telehealth | free resource | MedlinePlus Health Information | https://medlineplus.gov/telehealth.html |
| free resource | PubMed Central | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30274961/ | |
| free resource | Europe PubMed Central | https://europepmc.org/abstract/MED/30274961 |