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Takenobu K, Yoshida S, Katanoda K, et al. Impact of workplace smoke-free policy on secondhand smoke exposure from cigarettes and exposure to secondhand heated tobacco product aerosol during COVID-19 pandemic in Japan: the JACSIS 2020 study. BMJ Open 2022;12:e056891. doi: 10.1136/bmjopen-2021-056891
This article was previously published with an error.
The authors have informed the journal that two of the authors have received payment from the tobacco industry on projects unrelated to the one described in the article. This was not in breach of the journal’s policy at the time of publication, which stated that we will not ‘consider for publication any study that is partly or wholly funded by the tobacco industry’.1 However, to make these personal funds transparent, we have corrected the competing interests statement of the article.