State of the literature discussing smoke-free policies globally: A narrative review.

"CONFLICTS OF INTEREST The authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. The authors declare that they have no competing interests, financial or otherwise, related to the current work. J.A. Teed, M.O. Robichaud, M. Duren report that since the initial planning of the work they received support from the Tobacco Free Initiative at the World Health Organization. R.D. Kennedy reports that since the initial planning of the work he received a grant from the World Health Organization, 'Systematic review to identify interventions and approaches taken by nation-states, that have been shown to strengthen the implementation of smoke-free environments'. Also, he reports that in the past 36 months he is funded by the Bloomberg Initiative to Reduce Tobacco Use, the NIH and the FDA CTP through our Center for Excellence in Regulatory Science. In the past 36 months, R.D. Kennedy reports that he gave an invited talk at Roswell Park Cancer Institute in December 2022 for which he received a small honorarium and his expenses were covered for this travel."

"FUNDING This work was supported by the Tobacco Free Initiative at the World Health Organization in Geneva, Switzerland."