Martikainen, Aleksiina
Svensson Alavi, Alice
Alexanderson, Kristina
Farrants, Kristin
Funding for this research was provided by:
Karolinska Institute
Article History
Received: 23 August 2021
Accepted: 1 December 2021
First Online: 30 December 2021
Declarations
:
: The project was approved by the Regional Ethical Review Board of Stockholm (Dnr 2007/762–31, 2009/1917–32, 2016/1533–32). Data linkage was conducted by Statistics Sweden, who delivered anonymised data to the researchers. To preserve anonymity and personal integrity, the statistical analyses were not presented in such a way that individuals were assembled by unique combinations of factors or in small groups (< 10).In this observational study, based on population-based de-identified register data, informed consent was not applicable. The need for consent was waived by the Regional Ethical Review Board in Stockholm, Sweden (Dnr 2007/762–31, 2009/1917–32, and 2016/1533–32).All methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that there is no conflict of interest.