Karlén, Jonna http://orcid.org/0000-0002-5580-9187
Karlsson, Mathias
Eliasson, Håkan
Bonamy, Anna-Karin Edstedt
Halvorsen, Cecilia Pegelow
Funding for this research was provided by:
Hjärt-Lungfonden (20130469)
Article History
Received: 29 May 2019
Accepted: 23 August 2019
First Online: 5 September 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (Regional Ethical Review Board in Stockholm (2015-1943-31/4) with amendment (2016/2242-32)) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from the parents to all individual participants included in the study.