1. Department of Hematology and MedicineThe Karolinska Institute at Karolinska University Hospital Huddinge Stockholm Sweden
2. The Research Unit for General Practice and Section of General Practice, Department of Public HealthUniversity of Copenhagen Copenhagen Denmark
3. Department of Clinical BiochemistryCopenhagen University Hospital Hvidovre Copenhagen Denmark
4. Department of HematologyCopenhagen University Hospital Rigshospitalet Denmark
5. Department of HematologyRoskilde University Hospital Herlev Denmark