Trends in electronic cigarette use and conventional smoking: quantifying a possible 'diversion' effect among US adolescents.

"data s1."

"Declaration of interests After this initial study was completed, both authors became affiliated with Pinney Associates, Inc., which provides consulting services on tobacco harm minimization to JUUL Labs, Inc. The content here precedes this conflict of interest, and as such neither JUUL nor Pinney Associates had any role in the conceptualization, design, analysis, interpretation or presentation of data, or in the decision to publish."

"This work was supported by the National Institute for General Medical Sciences (NIGMS) within the National Institutes of Health (NIH), grant number P20GM121341; by Direktoratet for internasjonalisering og kvalitetsutvikling i høgare utdanning (the Norwegian Agency for International Cooperation and Quality Enhancement in Higher Education; DIKU), grant number NNA‐2016/10023; and through a graduate research assistantship from the University of North Dakota (UND). This content is solely the work of the authors, and does not necessarily reflect the views of the NIH, NIGMS, DIKU or UND. The authors would also like to thank Dr Navid Ghaffarzadegan for feedback on an early version of the model."