Updates are available Correction dated 2020-03-25

Article History

Received: 25 September 2019

Accepted: 17 December 2019

First Online: 15 January 2020

Change Date: 25 March 2020

Change Type: Correction

Change Details: It was highlighted that the original article [1] contained a formatting error in the equations.

Ethics approval and consent to participate

: An online survey was performed in adult consumers in Denmark, Estonia, Finland, and Sweden by Taloustutkimus Ltd. We asked about fish eating habits but not about health or other sensitive issues. We did not ask or collect identity information of the respondents, except for their age, gender, and country, which were used for classification in the analyses. The survey did not involve any interventions. Due to these reasons, ethical permission was not needed in any of the study countries, according to national guidelines for research and data protection: Finland (National Advisory Board of Research Ethics. Ethical principles of research in the humanities and social and behavioural sciences and proposals for ethical review. Helsinki; 2009. ExternalRef removed), Sweden (Lag (2003:460) om etikprövning av. forskning som avser människor ExternalRef removed), Denmark (National Videnskabsetisk Komité. Hvad skal jeg anmelde? ExternalRef removed), and Estonia (Riigi Teataja. Isikuandmete kaitse seadus RT 2007, 24, 127. ExternalRef removed). Accessed 28 Nov 2019.The consent to participate was obtained from the study participants in writing.

: Not applicable.

: The authors declare that they have no competing interests.