1. Medical Research Council Lifecourse Epidemiology Centre, University of Southampton, Southampton, United Kingdom
2. School of Nursing and Midwifery, University of Plymouth, Plymouth, United Kingdom
3. Paediatric Endocrinology, University Hospitals Southampton National Health Service Foundation Trust, Southampton, United Kingdom
4. Academic Unit of Bone Metabolism, University of Sheffield, Sheffield, United Kingdom
5. Academic Unit of Child Health, Sheffield Children's Hospital, University of Sheffield, Sheffield, United Kingdom
6. Nuffield Department of Women's & Reproductive Health, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
7. Department of Obstetrics and Gynaecology, Sheffield Hospitals National Health Service Trust, University of Sheffield, Sheffield, United Kingdom
8. Medical Research Council Nutrition and Bone Health, University of Cambridge, Cambridge, United Kingdom
9. National Institute for Health Research Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton National Health Service Foundation Trust, Southampton, United Kingdom
10. Department of Medicine, Faculty of Medicine and Health Sciences, University of East Anglia, Norwich, United Kingdom
11. National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, Oxford, United Kingdom