1. Danish Hospital for Rheumatic Diseases, University of Southern Denmark , Sønderborg, Denmark
2. Institute of Regional Health Research (IRS), University of Southern Denmark , Odense, Denmark
3. Thrombosis and Haemophilia, Kings Healthcare Partners, Guy’s and St Thomas’ NHS Foundation Trust , London, UK
4. Obstetrics and Gynaecology, North Middlesex University Hospital NHS Trust , London, UK