Doering, Sabrina
Larsson, Henrik
Halldner, Linda
Gillberg, Christopher
Kuja-Halkola, Ralf
Lundström, Sebastian
Funding for this research was provided by:
Horizon 2020 Framework Programme (721567, 721567)
Vetenskapsrådet (2017-02552)
University of Gothenburg
Article History
Received: 10 May 2021
Accepted: 22 March 2022
First Online: 1 April 2022
Declarations
:
: The parents were informed about the study in connection with their twins’ 9<sup>th</sup> and 15<sup>th</sup> birthday. Participating in interviews, after being informed about the study, is regarded as verbal informed consent (age 9) and, at age 15 the parents agreed to participate via a web-questionnaire and digitally consented after being informed about the study. Both the CATSS-9 and 15 have ethical approval from the Swedish Ethical Review Authority (DNR: 2010/597–31/1; 2016/2135–31;2009/739–31-5) in which the procedures above were described and approved. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.