1 Centre for Social, Health and Related Research, Birmingham City University, Ravensbury Building, Westbourne Road, Edgbaston, Birmingham, B15 3TN, United Kingdom.
2 Institute of Metabolism and Systems Research, University of Birmingham, United Kingdom.
3 Guy's & St Thomas' Foundation Trust, London, United Kingdom.
4 Aberdeen Centre for Women's Health Research, University of Aberdeen, Aberdeen, United Kingdom.
5 WHO Collaborating Centre for Global Women's Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom; NIHR Birmingham Biomedical Centre (BRC), University Hospitals Birmingham, Birmingham, United Kingdom; Birmingham Women's and Children's NHS Foundation Trust, Birmingham, United Kingdom.
6 Centre for Social, Health and Related Research, Birmingham City University, Ravensbury Building, Westbourne Road, Edgbaston, Birmingham, B15 3TN, United Kingdom. Electronic address: [email protected].