1. University of Exeter College of Medicine and Health, Exeter, UK
2. Department of Public Health, Environments and Society, London School of Hygiene and Tropical Medicine, London, UK
3. Department of Medical Statistics, London School of Hygiene and Tropical Medicine, London, UK
4. School of Nursing and Midwifery, Medical Biology Centre, Belfast, UK
5. DECIPHer, Cardiff School of Social Sciences, Cardiff University, Cardiff, UK
6. Teenage Pregnancy Knowledge Exchange, University of Bedfordshire, Luton, UK
7. Population Health Sciences, University of Bristol, Clifton, Bristol, UK