1. Pediatric Hematology Clinic and the Laboratory for Leukocyte Function, Meir Medical Center, Kfar Saba Israel, and Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
2. Sanquin Research, and Landsteiner Laboratory, Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands
3. Department of Pediatric Hemato-Oncology; Dana Children's Hospital, Tel Aviv Sourasky Medical Center; Tel Aviv Israel
4. Immunology Service, Department of Pediatrics, Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel and Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
5. Meyer Children's Hospital and Rappaport Faculty of Medicine, The Technion-Israel Institute of Technology; Haifa Israel
6. Division of Allergy & Immunology, Ha'Emek Medical Center, Afula, Israel and Rappaport Faculty of Medicine, The Technion-Israel Institute of Technology; Haifa Israel
7. Department of Pediatrics; Shaare Zedek Medical Center; Jerusalem Israel
8. Pediatric Infectious Diseases Unit; Sourasky Medical Center; Tel Aviv Israel
9. Ambulatory Pediatrics, Nablus; Palestinian Authority
10. Allergy and Immunology Unit; Schneider Children's Medical Center; Tel Aviv Israel
11. Immunology Clinic, Soroka Medical Center; Beer Sheva Israel
12. Department of Pediatric Hematology-Oncology and Bone Marrow Transplantation; Hadassah Medical Center; Jerusalem Israel