Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2016-00917)
Received: 6 November 2019
Accepted: 11 August 2020
First Online: 10 September 2020
Ethics approval and consent to participate
: This study is a 7-year follow-up of former smokers in Sweden. Both studies were approved by the Regional Ethical Review Board in Stockholm (2009/2102-31/5; 2017/561-31/5). Respondents has approved to participate and answer a web-based survey.
: Not applicable
: The authors declare that they have no competing interests.