1. Faculty of Medicine; Department of Medicine II; University Hospital Freiburg; University of Freiburg; Freiburg Germany
2. Institute of Transfusion Medicine; University Hospital Hamburg-Eppendorf; Hamburg Germany
3. Faculty of Medicine; Institute for Cell and Gene Therapy; University Hospital Freiburg; University of Freiburg; Freiburg Germany
4. Faculty of Medicine; Institute of Virology; University Hospital Freiburg; University of Freiburg; Freiburg Germany