Editorial: Current Challenges in Immune and Other Acquired Cytopenias of Childhood

1 Department of Pediatric Oncology, Hematology and Clinical Immunology, Center of Child and Adolescent Health, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany, 2 Molecular and Cellular Immunology Section, University College London – Institute of Child Health, London, UK, 3 Research Unit for Pediatric Hematology and Immunology, Division of Pediatric Hematology-Oncology, Department of Pediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria