1. Semmelweis School of Medicine, Semmelweis University Budapest, Budapest, Hungary
2. Department of Dermatology, University Hospital Würzburg, Würzburg, Germany
3. Department of Pathology, University of Würzburg, Würzburg, Germany
4. Department of Pediatrics, Section of Neonatology, University Hospital Würzburg, Würzburg, Germany
5. Department of Pediatrics, Section of Pediatric Hematology and Oncology, Stem Cell Transplantation (SCT), University Hospital Würzburg, Würzburg, Germany