| Name | Info | Provider | Link |
|---|---|---|---|
| COPD | free resource | MedlinePlus Health Information | https://medlineplus.gov/copd.html |
| free resource | Nature Publishing Group | https://doi.org/10.1038/s41533-019-0123-0 | |
| free resource | PubMed Central | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31073124/ | |
| free resource | Europe PubMed Central | https://europepmc.org/abstract/MED/31073124 |