Funding for this research was provided by:
Regional agreement between Umeå University and Västerbotten county council on cooperation in the field of Medicine, Odontology and Health (VLL-644531)
Semper AB (NA)
Received: 26 September 2018
Accepted: 21 January 2019
First Online: 31 January 2019
Ethics approval and consent to participate
: Ethical approval was granted from the Regional Ethical Review Board at Umeå University, Sweden (Dnr 2014–363-31 M, 2016–134-32 M and 2018-4-32). Informed consent has been obtained from the parents/legal guardians of all participants.
: Not applicable.
: UJ is a doctoral student at the Umeå University Industrial Doctoral School for Research and Innovation with Semper AB as industrial sponsor. CT is an employee of Semper AB. OH and BL are members of the Scientific Advisory Board of Semper AB. TL, OH and BL have received research support from Semper. The remaining authors declare no conflicts of interest related to the study.
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