Updates are available Correction dated 2018-07-16

Article History

Received: 5 June 2018

Accepted: 6 June 2018

First Online: 22 June 2018

Change Date: 16 July 2018

Change Type: Correction

Change Details: After publication of the original article [1], the authors noticed an error in the Competing interests section.

Competing interests

: SC has no competing interests to declare. LD has conducted research for independent electronic cigarette companies. These companies had no input into the design, conduct or write up of the projects. She has also acted as a consultant for the pharmaceutical industry and as an expert witness in a patent infringement case (2015). MG received a research grant from Pfizer and serves on an advisory board to Johnson & Johnson, manufacturers of smoking cessation medications.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.