Funding for this research was provided by:
University of Oulu including Oulu University Hospital
Article History
Received: 28 April 2020
Accepted: 2 September 2020
First Online: 10 September 2020
Compliance with Ethical Standards
:
: Authors declare that there is no conflict of interest.
: The study protocol of our project was approved by the Ethics Committee of Oulu University Hospital, Finland. It follows the standards of the 1964 Helsinki declaration and its later amendments.
: The participants of our study were given a complete description of the research plan. Signed informed consent was required from the adolescent and their parent(s)/guardian(s) before enrolment to the study.