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Article History

Received: 2 November 2023

Accepted: 5 August 2024

First Online: 13 August 2024

Declarations

:

: The trial has been evaluated by the regional ethics committee (reference number 402918) (Additional file 1). A data protection impact assessment has been conducted to safeguard privacy in collaboration with Norwegian Centre for Research Data (Additional file 2). The project was conducted in accordance with applicable regulations. Informed consent to participant was obtained from all participants in written form.

: No personal participant information is included in this article.

: RF and MU are directors and shareholders of Clinvivo Ltd, a University of Warwick spin-out company that provides data collection services to health services researchers. However, Clinvivo’s services were not used in this study and will not be used in the main trial. MU is the chief investigator or co-investigator on multiple previous and current research grants from the UK National Institute for Health Research, and is a co-investigator on grants funded by the Australian NHMRC. He was an NIHR Senior Investigator until March 2021. RF and MU are part of an academic partnership with Serco Ltd, funded by the European Social Fund, related to return-to-work initiatives. MU is a co-investigator on two current and one completed NIHR-funded studies that have, or have had, additional support from Stryker Ltd. While the leaflets are available electronically free of charge in the UK, KB has received royalties from the publisher when printed English language copies have been sold in the UK. All other authors declare that they have no competing interests.