1. Department of Gynaecology, Solihull Hospital, Birmingham, UK;
2. Unit of Psychology, Institute of Psychiatry (at Guy's), King's College London, London, UK;
3. Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, USA;
4. Women's Unit, Solihull Hospital, Birmingham Heartlands & Solihull NHS Trust, Birmingham, UK;
5. Department of Obstetrics & Gynaecology, University of Glasgow, College of Medicine, Western Infirmary, Glasgow, UK;
6. National Heart & Lung Institute, Royal Brompton Hospital, London, UK;
7. Reproductive and Maternal Medicine, University of Glasgow, Glasgow, UK