Planning ahead for research participation: survey of public and professional stakeholders' views about the acceptability and feasibility of advance research planning.

"Declarations Ethics approval and consent to participateThis study was approved by the Cardiff University School of Medicine Research Ethics Committee (SMREC ref. 22.84). The study was conducted in accordance with Declaration of Helsinki and ICH Good Clinical Practice (GCP) requirements. All study participants provided informed consent prior to participation in the survey. Patient consent for publicationNot applicable. Competing interestsThe authors declare that they have no competing interests. Competing interests The authors declare that they have no competing interests."

"Funding This study was conducted as part of a National Institute of Health Research Advanced Fellowship (CONSULT) held by VS and funded by the Welsh Government through Health and Care Research Wales (NIHR-FS(A)-2021). The funding body did not participate in the study design, data collection, analysis, or interpretation in writing this manuscript. The Centre for Trials Research is funded by the Welsh Government through Health and Care Research Wales and by Cancer Research UK. The Primary and Emergency Care Research Centre Wales (PRIME) is funded by the Welsh Government through Health and Care Research Wales."