Switching and substantial reductions in cigarette consumption concurrent with use of a heated tobacco product among adults who smoke in Czechia: an actual use study. - Russell, Christopher; Barnard, Gabriel; Marza, Venus; Notley, Sophie; Nahde, Thomas; Fitzpatrick, Martin; Malt, Layla; Stevenson, Matthew; Weaver, Sarah; McKeganey, Neil (Harm Reduction Journal, 2025)