Funding for this research was provided by:
Medicinska Fakulteten, Lunds Universitet
Greta och Johan Kocks stiftelser
skåne county council's research and development foundation
Received: 4 September 2020
Accepted: 12 July 2021
First Online: 28 July 2021
: Ethical approval was achieved 15/03/2018 before trial commence 21/03/2018 from regional ethical committee Lund Ref: 2018/58. Additional approval 2019-06-13 ref: 2019-01980 regarding follow-up of opioid replacement therapy 12 months after baseline.Additional approval will be applied for a multi-center study.
: Not applicable.
: The authors declare that they have no competing interests.