1. National Heart & Lung Institute, Imperial College London, Royal Brompton Hospital, London, UK
2. Department of Gynaecology, King’s College Hospital, London, UK
3. School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
4. Department of Cardiology, Radboud University Medical Center, Nijmegen, The Netherlands
5. Department of Gynaecology, Chelsea & Westminster Hospital, London, UK
6. Department of Gynaecology, Queen Charlotte’s and Chelsea & Westminster Hospitals, Imperial College London, London, UK