Name Info Provider Link
Quitting Smoking free resource MedlinePlus Health Information https://medlineplus.gov/quittingsmoking.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32857030/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/32857030
free resource Centers for Disease Control and Prevention https://www.cdc.gov/pcd/issues/2020/20_0052.htm