1. Department of Haematology and Coagulation Disorders; Sahlgrenska University Hospital; Gothenburg Sweden
2. Department of Antenatal Care; Närhälsan Primary Care; Västra Götaland Sweden
3. Department of Obstetrics and Gynaecology; Institute of Clinical Science; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
4. Centre for Thrombosis and Haemostasis; Skåne University Hospital; Lund University; Malmö Sweden
5. Coagulation Unit; Haematology Centre; Karolinska University Hospital; Stockholm Sweden