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. Center of Pediatric and Adolescent Medicine; University Medical Center; Freiburg Germany
4. Institute for Transfusion Medicine; University of Ulm; Ulm Germany
5. Molecular Immunology Unit, Institute of Child Health (ICH); University College London (UCL); London UK
6. INSEM UMR 1163; Laboratory of Normal and Pathological Homeostasis of the Immune System; Paris France
7. Paris Descartes-Sorbonne Paris Cité University; Imagine Institute; Paris France
8. Centre d'Etudes des Déficits Immunitaires, Assistance Publique-Hôpitaux de Paris; Hôpital Necker; Paris France
9. The Canadian Centre for Primary Immunodeficiency; Division of Immunology and Allergy and Department of Pediatrics; the Jeffrey Modell Research Laboratory for the Diagnosis of Primary Immunodeficiency; the Hospital for Sick Children and the University of Toronto; Toronto Ontario Canada
10. Institute of Cellular Medicine; Newcastle University; Newcastle upon Tyne UK
11. Institute for Clinical Transfusion Medicine and Immunogenetics Ulm; German Red Cross Blood Service; Ulm Germany