Text and Data Mining valid from 2018-05-08
Received: 8 December 2016
Accepted: 23 April 2018
First Online: 8 May 2018
Ethics approval and consent to participate
: The present study was conducted according to the guidelines laid down in the Declaration of Helsinki and all procedures involving human subjects were approved by the Regional Committee for Medical and Health Research Ethics in South-Eastern Norway Committee A (REC South East A, reference numbers S-97045 and S-95113) and the Norwegian Data Protection Authority. Written informed consent was obtained from all MoBa participants.
: The authors declare that they have no competing interests.
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