Funding for this research was provided by:
Academy of Finland (308351, 336138, 345117)
Strategic Research Council at the Academy of Finland (345132)
University of Helsinki including Helsinki University Central Hospital
Received: 1 June 2021
Accepted: 8 March 2022
First Online: 22 March 2022
: The authors declare that they have no conflict of interest.
: Ethical approval for SHPS was given by the Finnish National Institute for Health and Welfare.
: The survey was confidential and anonymous. Participation was voluntary. Participants gave informed consent by answering the survey. The parents of the participants who were under 15 years were informed about the survey in advance and had an option to withdraw the consent to participate.
: All authors have given consent for publication.