1. Department of Pediatric Hematology and Stem Cell Transplantation Central Hospital of Southern Pest ‐ National Institute of Hematology and Infectious Diseases Budapest Hungary
2. ImmunDeficiencyCenter Leipzig (IDCL) at Klinikum St. Georg gGmbH Leipzig Germany
3. The South Bend Clinic South Bend Indiana USA
4. AARA Research Center Dallas Texas USA
5. Biotest AG Dreieich Germany