Association between electronic cigarette use and changes in quit attempts, success of quit attempts, use of smoking cessation pharmacotherapy, and use of stop smoking services in England: time series analysis of population trends

BMJ, The - Trang i4645
Emma Beard1,2, Robert West1, Susan Michie2, Jamie Brown1,2
1Cancer Research UK Health Behaviour Research Centre, Department of Epidemiology and Public Health, University College London, London, UK
2Research Department of Clinical, Educational and Health Psychology, University College London, London WC1E 7HB, UK

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