to our knowledge, it is the only open access dataset of verified international cigarette consumption Proprietary data sources are known to exist (eg, Euromonitor, GlobalData, and internal documents at various international and non-governmental organisations), but are generally not available to researchers or the public What this study adds An open access dataset of internationally comparable estimates of cigarette consumption was developed covering 71 countries from 1970 to 2015, accounting for over 95% of the worlds cigarette consumption and 85% of the worlds population By comparison with IHMEs modelled estimates, the current dataset better captures and is more representative of actual year-over-year changes in cigarette consumption, which would not be expected to follow linear trends in any given year Use of this dataset allows for quasi-experimental evaluations of national and global interventions on tobacco control, including the WHO Framework Convention on Tobacco Control and the important policies it promotes Acknowledgments We thank G Emmanuel Guindon for his ongoing advice throughout the study and several content experts who helped with data collection, including Abdi Abdillah Ahsan (Indonesia), Ayda Yurekli (Turkey), Bungon Ritthiphakdee (Thailand), Carlos Manuel Guerrero Lpez (Mexico), Corne van Walbeek (South Africa, Jamaica), Frank Chaloupka (United States), Jakub Lobaszewski (Poland), Muhamma, Jami Husain (Bangladesh), Nigar Nargis (Bangladesh), Rijo M John (India), and Yagya Karki (Nepal)

This heightened exposure to harmful substances can exacerbate respiratory issues and contribute to smoking-related diseases
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The thickness of the cortex of the sea-urchin egg and the problem of the vitelline membrane
This difficulty is known as time distortion