1. Department of Infectious Disease Kayseri City Hospital, University of Health Science University Kayseri Turkey
2. Department of Hematology Kayseri City Hospital, University of Health Science University Kayseri Turkey
3. Department of Infectious Disease, Faculty of Medicine University of Erciyes Kayseri Turkey
4. Department of Hematology, Faculty of Medicine University of Erciyes Kayseri Turkey
5. Department of Paediatrics, Division of Pediatric Intensive Care Erzurum City Hospital, University of Health Science University Erzurum Turkey