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APA Citation
Piper, M. E., Baker, T. B., Benowitz, N. L., & Jorenby, D. E. (2020). changes in Use Patterns Over 1 Year Among Smokers and Dual Users of Combustible and Electronic Cigarettes. Nicotine & tobacco research, 22(5), 672–680. http://access.bl.uk/ark:/81055/vdc_100117160107.0x000027