'Comparing blood donors' diaporamas de présentation

1 Institute of Transfusion Medicine, 2 Institute for Community Medicine, University of Greifswald

Table 1: Distribution of gender and year of birth depending on donation frequency within the study interval ( n.s.: not significant). Figure 1: study participation. 4014 donors asked to participate. 2596 participated. 535 had already paticipated. 883 refused participation. 2468

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