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Susan Channon, Elinor Coulman, Rebecca Cannings-John, Josie Henley, Mandy Lau, Fiona Lugg-Widger, Heather Strange, Freya Davies, Julia Sanders, Caroline Scherf, Zoë Couzens & Leah Morantz.

Susan Channon ^1,*, Elinor Coulman ¹, Rebecca Cannings-John ¹, Josie Henley ¹, Mandy Lau ¹, Fiona Lugg-Widger ¹, Heather Strange ¹, Freya Davies ², Julia Sanders ³, Caroline Scherf ⁴, Zoë Couzens ⁵, Leah Morantz

¹ Centre for Trials Research, Cardiff University, Cardiff, UK
² The Welsh Centre for Primary and Emergency Care Research (PRIME), Division of Population Medicine, Cardiff University, Cardiff, UK
³ School of Healthcare Sciences, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK
⁴ Cardiff and Vale University Health Board, Department of Sexual Health, Cardiff Royal Infirmary, Cardiff, UK
⁵ Public Health Wales NHS Trust, Public Health Wales, Cardiff, UK
^* Corresponding author Email: channons2@cardiff.ac.uk

Declared competing interests of authors: Rebecca Cannings-John was a National Institute for Health and Care Research (NIHR) Health Technology Assessment Associate Board member (16 May 2018 to 30 November 2020). Freya Davies was a co-applicant and named researcher at a research centre funded by Health and Care Research Wales [PRIME (Wales Centre for Primary and Emergency Care)]. Caroline Scherf received financial support from Gedeon Richter for attending the European Society of Contraception and Reproductive Health meeting in 2018 in Budapest. Julia Sanders acts as a self-employed independent midwifery expert witness and is chief investigator of the NIHR-funded POOL study, co-investigator of the NIHR-funded CHOICE study, co-investigator of the NIHR-funded iHOLDS study, co-investigator of the NIHR funded HOLDS study, co-investigator of the NIHR funded ANODE study and a funded co-investigator with Policy Research Unit NPEU, University of Oxford (Oxford, UK).