Text and Data Mining valid from 2019-05-29
Received: 7 May 2018
Accepted: 14 May 2019
First Online: 29 May 2019
Ethics approval and consent to participate
: The Norwegian Data Inspectorate and the Regional Ethics Review Board (RERB) approved data collection in 2000 (reference number 81/99), and the Norwegian Data Inspectorate concluded that no consent procedure was necessary. No approval was necessary for the anonymous 2016 material according to renewed contact with RERB. The data was anonymous, presented here in aggregated forms, and no individual consent to participate was needed.
: Not applicable.
: The authors declare that they have no competing interests.
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