1. Trends in dental visits among the US non-institutionalized civilian population: Findings from BRFSS 1995–2008;Akinkugbe;Journal of theory and practice of dental public health.,2013
2. Improving access to care in America. Changing the US health care system: Key issues in health services policy and management;Andersen,2007
3. BRFSS. 2020 Behavioral Risk Factor Surveillance System. 2021. Available at: CDC - 2020 BRFSS Survey Data and Documentation.
4. CDC. Smokeless Tobacco Product Use in the United States. 2021. Available at: https://www.cdc.gov/tobacco/data_statistics/fact_sheets/smokeless/use_us/index.htm.
5. CDC, Centers for Disease Control and Prevention. Smokeless Tobacco Product Use in the United States. 2022. Available at: Smokeless Tobacco Use in the United States | CDC.