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Continue to ChatClinical trial finds e-cigarettes twice as effective at helping smokers quit https://www.kiwiblog.co.nz/2019/01/clinical_trial_finds_e-cigarettes_twice_as_effective_at_helping_smokers_quit.html
Clinical trial finds e-cigarettes twice as effective at helping smokers quit https://www.kiwiblog.co.nz/2019/01/clinical_trial_finds_e-cigarettes_twice_as_effective_at_helping_smokers_quit.html