Text and Data Mining valid from 2020-04-15
Received: 24 November 2019
Accepted: 2 April 2020
First Online: 15 April 2020
Ethics approval and consent to participate
: The study was first reviewed by the Norwegian Regional Committee for Medical and Health Research Ethics. The Committee concluded that the study is not covered by the Health Research Act as we do not make use of or bring forth new personal health information [CitationRef removed]. Consequently, the committee formally waived the need for ethics approval. The study was submitted and reviewed by The Data Protection Official for Research (NSD) to ensure that the project was in accordance with the Personal Data Act and the Personal Health Data Filing System Act. The NSD approved the study (reference number 46008). Parents representing the participating children received written information about the study and gave written consent to participation.
: Not applicable.
: The authors declare that they have no conflict of interest.