Affiliation: | 1. Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands;2. Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden;3. Department of Obstetrics and Gynecology, Karolinska University Hospital, Stockholm, Sweden;4. Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands |