| Name | Info | Provider | Link |
|---|---|---|---|
| Smokeless Tobacco | free resource | MedlinePlus Health Information | https://medlineplus.gov/smokelesstobacco.html |
| free resource | PubMed Central | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31225943/ | |
| free resource | Europe PubMed Central | https://europepmc.org/abstract/MED/31225943 | |
| subscription/membership/fee required | Wiley | https://doi.org/10.1002/ajhb.23281 |