Funding for this research was provided by:
Vetenskapsrådet (521-2013-2756)
Article History
Received: 2 November 2019
Accepted: 27 March 2020
First Online: 8 April 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interests.
: The study was approved by the Regional Ethical Review Board, Lund, Sweden (2014/918).
: Anewspaper ad was published in the local newspaper “Helsingborgs Dagblad” (HD) informing the public about the study goals and the possibility of non-consent for individuals included in the study (“opt-out”).