Follow the money: a closer look at US tobacco industry marketing expenditures
David T Levy, Alex C Liber, Christopher Cadham, Luz Maria Sanchez-Romero, Andrew Hyland, Michael Cummings, Cliff Douglas, Rafael Meza, Lisa Henriksen
Tobacco Control Jan 2022, tobaccocontrol-2021-056971; DOI: 10.1136/tobaccocontrol-2021-056971