Name Info Provider Link
subscription/membership/fee required Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S0761-8425(14)00109-0
Smoking and Youth free resource MedlinePlus Health Information https://medlineplus.gov/smokingandyouth.html
subscription/membership/fee required Masson (France) http://www.em-consulte.com/retrieve/pii/S0761-8425(14)00109-0