1. Division of Neonatology and Pediatric Intensive Care; Department of Pediatrics and Adolescent Medicine; Medical University of Greifswald; Greifswald Germany
2. Division of Pediatric Hematology and Oncology; Department of Pediatrics and Adolescent Medicine; Medical University of Greifswald; Greifswald Germany
3. Division of Pediatric Surgery; Department of Pediatrics and Adolescent Medicine; Medical University of Greifswald; Greifswald Germany