1. Department of Clinical Immunology and Transfusion Medicine, University and Regional Laboratories, Akutgatan 8, 221 85 Lund, Sweden
2. Department of Laboratory Medicine, University Hospital of North Norway, 9019 Tromsø, Norway
3. Institute for Clinical Immunology, Transfusion Medicine and Hemostasis, Justus-Liebig-University, 35392 Giessen, Germany
4. German Center for Feto-Maternal Incompatibility, University Hospital Giessen and Marburg, Campus Giessen, 35392 Giessen, Germany
5. Department of Obstetrics and Gynecology, University Hospital of North Norway, 9019 Tromsø, Norway
6. Women’s Health and Perinatology Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, 9019 Tromsø, Norway