1. Department of Research Østfold Hospital Trust Grålum Norway
2. Institute of Clinical Medicine University of Oslo Oslo Norway
3. Department of Haematology Oslo University Hospital Oslo Norway
4. Department of Health Sciences Østfold University College Halden Norway
5. Department of Medicine – Thrombosis and Hemostasis Leiden University Medical Center Leiden The Netherlands
6. McGill University Montreal QC Canada
7. Jewish General Hospital Montreal QC Canada
8. Library of Medicine and Science University of Oslo Norway