“…Reviews have been published on ENDS in general 10–21 or on specific topics, including: health effects 22–58 ; impact on smoking cessation 29,40–43,45,47,48,51,59–73 ; product features 22,39,41–43,45,47,74–77 ; potential to induce dependence 28,45,47,78,79 ; consumer perceptions 26,48,80,81 ; patterns of use 8,26,43,48,51,82–90 ; and policies. 8,48,91–98 Two conducted a bibliometric review of the ENDS literature 86,99 and 46% of the reviews were systematic.…”