1 1St Department of Pediatrics, Semmelweis University, 53-54 Bókay János Street, Budapest, 1083, Hungary.
2 Pediatric Hematology and Stem Cell Transplantation Unit, Central Hospital of Southern Pest, National Institute of Hematology and Infectious Diseases, Budapest, Hungary.
3 1St Department of Pediatrics, Semmelweis University, 53-54 Bókay János Street, Budapest, 1083, Hungary. reusz.gyorgy@med.semmelweis-univ.hu.
4 Department of Laboratory Medicine, Division of Clinical Genetics, Department of Human Genetics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.
5 2Nd Department of Pathology, Semmelweis University, Budapest, Hungary.