doi: 10.3389/fphys.2021.673341 Received 26 March 2021 Accepted 11 May 2021 Published 17 June 2021 Volume 12 - 2021 Edited by Lszl Czak, University of Szeged, Hungary Reviewed by Aron Vincze, University of Pcs, Hungary

(The District of Columbia has the highest tax at $4.50 and Missouri has the lowest at 17 cents.) 7-9 All other tobacco products are taxed at 65.08% of the wholesale price.7,8 Clean indoor air ordinances Smoking is prohibited in all government and private workplaces, public schools, restaurants, bars, casinos/gaming establishments (tribal establishments exempt), retail stores, recreational/cultural facilities and childcare facilities.8 E-cigarettes are included in the states clean indoor air law.10 Licensing laws Retailers, wholesalers, and distributors are required to obtain a license to sell tobacco products.7 Retailers, wholesalers, and distributors are required to obtain a license to sell e-cigarette products.10 Youth access laws In December 2019, the United States adopted a law raising the federal minimum age of sale of all tobacco products to 21, effective immediately
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Within the UK there are Iqos shops in London, Manchester, Bristol and Cardiff, but none in Hull, Burnley or Mansfield where PMIs research shows smoking rates are highest