Affiliation: | 1. Sanquin‐LUMC Jon J. van Rood Center for Clinical Transfusion Research, , Leiden, the Netherlands;2. Sanquin Blood Supply Foundation, , Amsterdam, the Netherlands;3. Department of Pediatrics, Division of Neonatology, Beatrix Children's Hospital, University Medical Center, , Groningen, the Netherlands;4. Department of Pediatrics, Division of Neonatology, Department of Clinical Epidemiology, Leiden University Medical Center, , Leiden, the Netherlands;5. Department of Pediatrics, Division of Neonatology, Sophia Children's Hospital, Erasmus Medical Center, , Rotterdam, the Netherlands |