Jacobsen, I. D.
Crossner, C.-G.
Eriksen, H. M.
Espelid, I.
Ullbro, C.
Funding for this research was provided by:
UiT The Arctic University of Norway, Tromsø, Norway
Public Dental Health Service Competence Centre of Northern Norway
University Hospital of Northern Norway
Norwegian Institute of Public Health
Article History
Received: 4 October 2016
Accepted: 24 October 2018
First Online: 4 December 2018
Compliance with ethical standards
:
: There are no conflicts of interest for any of the authors.
: The project was in accordance with the ethical standards of the national research committee and with the 1964 Helsinki declaration and its later amendments.