1. Department of Pediatric Pneumology, Immunology and Intensive Care, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin and Berlin Institute of Health Berlin Germany
2. Department of Pediatric Pulmonology Hannover Medical School Hannover Germany
3. ImmunoDeficiencyCenter Leipzig (IDCL), Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies Municipal Hospital St. Georg Leipzig Germany
4. Department of Immunology Labor Berlin - Charité Vivantes GmbH Berlin Germany
5. Institute for Transfusion Medicine, German Red Cross Blood Service Baden‐Wuerttemberg–Hessen University Ulm and Institute for Clinical Transfusion Medicine and Immunogenetics Ulm Ulm Germany
6. Department of Rheumatology and Clinical Immunology, Faculty of Medicine, Medical Center‐University of Freiburg University of Freiburg Freiburg Germany
7. Center for Chronic Immunodeficiency, Faculty of Medicine, Medical Center‐University of Freiburg University of Freiburg Freiburg Germany
8. Berlin Center for Regenerative Therapies (BCRT) Charité‐Universitätsmedizin Berlin Germany