Johannessen, Dagny Adriaenssen https://orcid.org/0000-0002-8601-6534
Nordfjærn, Trond
Geirdal, Amy Østertun
Article History
Received: 13 December 2018
Accepted: 22 April 2019
First Online: 3 May 2019
Authors’ information
: The systematic review was conducted as part of the first authors PhD project at OsloMet - Oslo Metropolitan University and funded by Blu Cross East in Norway.
: The target group, people with SUD, might be considered as vulnerable. On this background, this population was the group of interest in this review of already conducted studies. Patients have not been involved in this study and an ethical approval has therefore not sought.
: Not applicable.
: The authors declare that they have no competing interests.
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