| Name | Info | Provider | Link |
|---|---|---|---|
| free resource | JMIR Publications | https://mhealth.jmir.org/2019/8/e13418/ | |
| Stress | free resource | MedlinePlus Health Information | https://medlineplus.gov/stress.html |
| free resource | PubMed Central | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31429413/ | |
| free resource | Europe PubMed Central | https://europepmc.org/abstract/MED/31429413 |