What are the respiratory effects of e-cigarettes?

In this review by Gotts and colleagues (BMJ 2019;366:l5275, doi:10.1136/bmj.l5275, published 30 September 2019), an error in figure 2 (flowchart) meant that both options leading from “Did they successfully stop smoking?” were “Yes.” This has been corrected so that the second option is “No.”