Funding for this research was provided by:
Skåne Regional Council
Accepted: 26 January 2021
First Online: 10 February 2021
Ethics approval and consent to participate
: The study has been subjected to ethical review and was approved by the Regional Ethical Review Board in Lund (case no. 2014/547; 2015/369 and 2016/771).
: Not applicable.
: LA, JB and BJ declare that they have no competing interests.AH holds a position at Lund University which is sponsored by the Swedish state-owned gambling operator AB Svenska Spel. He also disposes research grants from the research councils of AB Svenska Spel, the state-owned alcohol monopoly Systembolaget, and from the research council of the Swedish Enforcement Agency and the Swedish Sports Federation. He is involved in a clinical research study receiving non-financial support from the commercial body Kontigo Care in the area of digital follow-up tools in the treatment of addictive disorders. He is also the national principal investigator of a prior pharmaco-epidemiological survey study conducted by the US research institute Research Triangle Institute and sponsored by the pharmaceutical company Shire, which supported the conduct of the study but did not provide personal fees to the individual researcher. The present competing interests are not involved in – and did not have any influence on – the present research project.