1. Department of Haematology; University College London Hospitals NHS Foundation Trust; London UK
2. Haemostasis Research Unit; Department of Haematology; University College London; London UK
3. Department of Vascular Medicine; Academic Medical Center; University of Amsterdam; Amsterdam the Netherlands
4. Center for Vascular Medicine and Department of Medicine III; University Hospital “Carl Gustav Carus”; Technische Universität Dresden; Dresden Germany
5. Department of Obstetrics and Gynaecology; University College London; London UK
6. Katharine Dormandy Haemophilia Center and Thrombosis Unit; The Royal Free Hospital NHS Foundation Trust; London UK
7. Department of Obstetrics and Gynaecology; The Royal Free Hospital NHS Foundation Trust; London UK