1. Department of Laboratory Medicine Karolinska Institutet Stockholm Sweden
2. Department of Rheumatology and Inflammation Research, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
3. Center for Fetal Medicine Karolinska University Hospital Stockholm Sweden
4. Department of CLINTEC Karolinska Institutet Huddinge Sweden
5. Department of Obstetrics and Gynecology Gävle Hospital Gävle Sweden
6. Clinical Immunology and Transfusion Medicine Karolinska University Hospital Stockholm Sweden