Sivertsen, Tine B.
Åstrøm, Anne N.
Greve, Gottfried
Aßmus, Jörg
Skeie, Marit S.
Funding for this research was provided by:
Universitetet i Bergen
Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Norway
Article History
Received: 24 October 2017
Accepted: 1 March 2018
First Online: 23 March 2018
Ethics approval and consent to participate
: The study was approved by the Regional Committee for Medical Research Ethics, western Norway in 2009 (2009/2264). Consent to participate was given by parents signing an informed consent approved by the Regional Committee for Medical Research Ethics, western Norway in 2009.
: Not applicable.
: The authors declare that they have no competing interests. The authors alone are responsible for the content and writing of the paper.
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