1. Applied Virology and Gene Therapy, Georg-Speyer-Haus, 60596 Frankfurt am Main, Germany.
2. Institute for Transfusion Medicine and Immunohematology, Red Cross Blood Donor Service (RCBDS), 60590 Frankfurt am Main, Germany.
3. Fresenius Biotech, 61352 Bad Homburg vor der Höhe, Germany.
4. Department of Hematology, Hemostaseology, and Oncology, Hannover Medical School, 30625 Hannover, Germany.
5. Division of Experimental Hematology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229.