1. Transfusion Research Center; Belgian Red Cross-Flanders; Ghent Belgium
2. Blood Service of the Belgian Red Cross-Flanders; Mechelen Belgium
3. Department of Public Health and Primary Care; Catholic University of Leuven KULAK; Kortrijk Belgium
4. Department of Public Health and Primary Care; Catholic University of Leuven; Leuven Belgium
5. Faculty of Medicine and Health Sciences; University of Ghent; Ghent Belgium