1. US Department of Health and Human Services (2014) The health consequences of smoking: 50 years of progress: A Report of the Surgeon General. Atlanta, GA: US Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health
2. Prevalence of Tobacco Smoking. World health Organization.
https://www.who.int/gho/tobacco/use/en/
. Accessed 12 July 2019
3. World Health Organization
https://www.who.int/tobacco/en/atlas38.pdf
. Accessed 12 July 2019
4. Hughes JR, Keely J, Naud S (2004) Shape of the relapse curve and long-term abstinence among untreated smokers. Addiction 99(1):29–38
5. Caponnetto P, Keller E, Bruno CM, Polosa R (2013) Handling relapse in smoking cessation: strategies and recommendations. Intern Emerg Med 8:7–12.
https://doi.org/10.1007/s11739-012-0864-z