1. Medical Faculty, Institution of Clinical Sciences Lund, Lund University, Lund, Sweden;
2. Department of Perioperative and Intensive Care, Skåne University Hospital, Lund, Sweden;
3. Section for Transfusion Medicine, Capital Region Blood Bank, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark;
4. Paediatric Intensive Care Unit, SUS Skåne University Hospital Lund, Lund, Sweden