1. Obstetrics and Gynaecology, Clinical Sciences; University of Nottingham; Nottingham UK
2. Oxford Clinical Trials Research Unit; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences; University of Oxford; Oxford UK
3. Obstetrics and Gynaecology; Nottingham University Hospitals NHS Trust; Nottingham UK
4. Stillbirth and neonatal death charity (SANDS); London UK
5. Nottingham Clinical Trials Unit; University of Nottingham; Nottingham UK
6. Obstetrics and Gynaecology; NIHR Biomedical Research Centre; University of Cambridge; Cambridge UK