1. Center for Chronic Immunodeficiency (CCI), University Medical Center and University of Freiburg, Freiburg, Germany;
2. Faculty of Biology, University of Freiburg, Freiburg, Germany;
3. Institute for Transfusion Medicine, University of Ulm, Ulm, Germany;
4. Institute of Pathology, University Medical Center Freiburg, Freiburg, Germany;
5. Department of Immunology, John Curtin School of Medical Research, The Australian National University, Canberra, Australia;
6. Center of Pediatric and Adolescent Medicine, University Medical Center and University of Freiburg, Freiburg, Germany;
7. Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden; and
8. Institute of Clinical Transfusion Medicine and Immungenetics Ulm, German Red Cross Blood Service Baden Württemberg–Hessen, Ulm, Germany