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Ethics declarations Ethics approval and consent to participate This study was carried out according to the Declaration of Helsinki principles and approved by the local Ethical Committee (Comitato Etico di Brescia, ASST degli Spedali Civili, Brescia, Italia, registration number NP3873)
Prices vary depending on the brand and retailer, but provincial tobacco taxes add several dollars to each pack compared to lower-tax provinces like Quebec
David Hammond, a professor at the University of Waterloos School of Public Health Sciences, said the scary and frightening images and statistics on cigarette boxes are still having an impact
For others, it is more intense and may persist for weeks
We excluded studies that did not report smoking status and outcomes, studies of children, studies that included other coronavirus infection and not specifically to COVID-19, studies that the number of smokers was zero or omitted, and studies in which all patients had the same outcome
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