| Institution: | 1. Department of Clinical Immunology, University Hospital Alexandrovska, Medical University, Sofia, Bulgaria;2. Department of Clinical Hematology, University Hospital Alexandrovska, Medical University, Sofia, Bulgaria;3. Laboratory of Transfusion Medicine, Sofiamed University Hospital, Sofia, Bulgaria;4. Laboratory of Clinical Immunology, Sofiamed University Hospital, Sofia, Bulgaria;5. Department of Clinical Hematology, Sofiamed University Hospital, Sofia, Bulgaria;6. Department of Genetics, Faculty of Biology, St. Kliment Ohridski Sofia University, Sofia, Bulgaria |
