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First, if you feel any guilt, get rid of that right now

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Statistical analysis Analyses were carried out using R v.3.6.3, Python v.3.8 and Stata v.16

That approach is standard practice in the U.K., but its outside the medical mainstream in the U.S., where only pharmaceutical-grade medications like nicotine gum and lozenges are formally approved to help smokers quit

Yu, V., Rahimy, M., Korrapati, A., Xuan, Y., Zou, A

Cigarette smoking as a risk factor for coronary heart disease in women compared with men: a systematic review and meta-analysis of prospective cohort studies