Funding for this research was provided by:
Received: 19 February 2021
Accepted: 8 November 2021
First Online: 25 January 2022
: The study was approved by the Swedish Ethical Review Authority (Dnr 2020–04202). The respondents gave their informed consent to the linking of registry data by answering the questionnaire. The dataset includes subjects who are 16-17 years old, but according to the Swedish regulations they do not need an informed consent from a parent or guardian to answer the questionnaire. The study followed the Swedish guidelines for studies in social sciences and humanities, in accord with the Declaration of Helsinki and the data are protected by the law of official statistics.
: Not applicable.
: The authors declare that they have no competing interests.