This paper turned up in my weekly search of PubMed.
Invalidity of an Oft-Cited Estimate of the Relative Harms of Electronic Cigarettes. Eissenberg T, Bhatnagar A, Chapman S, Jordt SE, Shihadeh A, Soule EK. Am J Public Health. 2020 Feb;110(2):161-162. doi: 10.2105/AJPH.2019.305424.
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