Differences between ethnic groups in self-reported use of e-cigarettes and nicotine replacement therapy for cutting down and temporary abstinence: a cross-sectional population-level survey in England.

"Declaration of interests L.S. undertake consultancy and research for and receive travel funds and hospitality from manufacturers of smoking cessation medications. E.B., J.B., H.T.B. and L.S. have received unrestricted research funding from Pfizer."

"Funding The Smoking Toolkit Study is currently primarily funded by Cancer Research UK (C1417/A14135; C36048/A11654; C44576/A19501) and has previously also been funded by Pfizer, GSK and the Department of Health. No funders had any involvement in the design of the study, the analysis or interpretation of the data, the writing of the report or the decision to submit the paper for publication. E.B., S.J., and J.B. are funded by Cancer Research UK (C1417/A14135). H.T.B.’s studentship is funded by Public Health England. The views expressed are those of the authors and not necessarily those of Cancer Research UK or other funders. No funders had any involvement in the design of the study, the analysis or interpretation of the data, the writing of the report or the decision to submit the paper for publication."