1. Molecular Biotechnology and Gene Therapy, Paul-Ehrlich-Institut, Langen, Germany.
2. Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany.
3. Institute for Transfusion Medicine and Immune Hematology, Goethe University and Red Cross Blood Donor Service Baden-Wuerttemberg-Hessen, Frankfurt, Germany.
4. Division of Haematology/Transfusion Medicine, Paul-Ehrlich-Institut, Langen, Germany.