Tinnfält, Agneta http://orcid.org/0000-0002-4505-9036
Fröding, Karin
Larsson, Madelene
Dalal, Koustuv
Funding for this research was provided by:
Public Health Agency of Sweden
Article History
First Online: 20 April 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interests.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants, and their parents, included in the study.