Funding for this research was provided by:
the Norwegian Research Fund for General Practice
Text and Data Mining valid from 2019-01-11
Received: 28 October 2018
Accepted: 20 December 2018
First Online: 11 January 2019
Ethics approval and consent to participate
: The study was approved by the Regional Committee South East for Medical and Health Research Ethics (REK nr 2010/1129–1) and the Oslo University Hospital Information Security and Privacy Office. Participation was based on informed verbal consent. For patients treated for acute poisoning by substances of abuse the signing of a consent form often turns out to be a practical problem, even when the patient has understood the information given and consented to inclusion. As the study was solely observational, we considered verbal consent sufficient. Verbal consent was registered on the registration form by the doctor including the patient. This procedure was approved by the ethics committee.
: Not applicable.
: The authors declare that they have no competing interests.
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