| Name | Info | Provider | Link |
|---|---|---|---|
| Allergy | free resource | MedlinePlus Health Information | https://medlineplus.gov/allergy.html |
| subscription/membership/fee required | Nature Publishing Group | https://doi.org/10.1038/cmi.2012.31 | |
| free resource | PubMed Central | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22903050/ | |
| free resource | Europe PubMed Central | https://europepmc.org/abstract/MED/22903050 |