1. MRC Integrative Epidemiology Unit at the University of Bristol, United Kingdom
2. Department of Population Health Sciences, Bristol Medical School, University of Bristol, United Kingdom
3. Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway
4. NIHR Bristol Biomedical Research Centre at the University Hospitals Bristol NHS Foundation Trust, University of Bristol, United Kingdom
5. School of Medicine, University of Glasgow, United Kingdom
6. Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom