1. Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine; Medical University of Graz; Graz Austria
2. Division of Neonatology, Department of Pediatrics and Adolescent Medicine; Medical University of Graz; Graz Austria
3. Department of Blood Group Serology and Transfusion Medicine; Medical University of Graz; Graz Austria