1. Institute for Clinical Immunology and Transfusion MedicineJustus Liebig University Giessen Germany
2. Department of Transfusion Medicine and HaemostaseologyFriedrich‐Alexander‐University Erlangen Germany
3. German Center for Feto‐Maternal Incompatibility (DZFI)University Hospital Giessen and Marburg Giessen Germany
4. Children's HospitalFriedrich‐Alexander‐University Erlangen Germany