Recommended core items to assess e-cigarette use in population-based surveys
Jennifer L Pearson, Sara C Hitchman, Leonie S Brose, Linda Bauld, Allison M Glasser, Andrea C Villanti, Ann McNeill, David B Abrams, Joanna E Cohen
Tobacco Control May 2018, 27 (3) 341-346; DOI: 10.1136/tobaccocontrol-2016-053541