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Authors
Rosenkranz, Moritz https://orcid.org/0000-0002-0851-6330
Schranz, Anna https://orcid.org/0009-0007-9125-7360
Verthein, Uwe https://orcid.org/0000-0002-5565-5536
Schomerus, Georg https://orcid.org/0000-0002-6752-463X
Speerforck, Sven https://orcid.org/0000-0002-9281-8461
Manthey, Jakob https://orcid.org/0000-0003-1231-3760
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Funding
Funding for this research was provided by:
Bundesministerium für Verkehr und Digitale Infrastruktur (FE82.0816/2023)
Universitätsklinikum Hamburg-Eppendorf (UKE)
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Article History
Received: 30 January 2025
Accepted: 26 August 2025
First Online: 17 September 2025
Declarations
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: The study has been reviewed and approved by the Local Psychological Ethics Committee of the Centre for Psychosocial Medicine in Hamburg, Germany (reference number: 0686).
: All authors reviewed and approved the final version of the manuscript for submission.
: JM: No financial relationship with entities profiting from cannabis legalisation (e.g., industry) are declared. In the context of cannabis legalisation, JM has worked as a consultant for national and international public health organisations, has received reimbursement for presentations, and has acted as an expert in a parliamentary hearing in Germany. All other authors do not declare any conflict of interest.
