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Contributors ZJ, MC, CT, CLC, WE, JB, CA: contributed to the design and delivery of the project; inputted to the final manuscript before submission. AS and CA: led on drafting the manuscript.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Ethics approval Ethical approval for the study was provided by the Psychiatry, Nursing and Midwifery Research Ethics Subcommittee at King’s College London on behalf of the Health Research Authority. The cited information (table 1 scenarios) is not from an actual patient. Any resemblance to real person living or deceased will be coincidence.
Provenance and peer review Not commissioned; externally peer reviewed.
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