1. Medizinische Klinik III, Charité Campus Benjamin Franklin, Berlin, Germany;
2. Robert Koch Institut, Berlin, Germany;
3. Institut für Pathologie, Charité Campus Benjamin Franklin, Berlin, Germany;
4. Department of Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, MD; and
5. Medizinische Klinik I, Charité Campus Benjamin Franklin, Berlin, Germany