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*Subsequent daily e-cigarette use was related to changing plans to quit smoking. | *Subsequent daily e-cigarette use was related to changing plans to quit smoking. | ||
*E-cigarette research focused only on smokers motivated to quit limits full evaluation. | *E-cigarette research focused only on smokers motivated to quit limits full evaluation. | ||
===2021: [https://pubmed.ncbi.nlm.nih.gov/34002223/ Differences in Switching Away From Smoking Among Adult Smokers Using JUUL Products in Regions With Different Maximum Nicotine Concentrations: North America and the United Kingdom]=== | |||
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