1. Institute of Hematology and Blood Transfusion; Prague; Czech Republic
2. Department of Hematology and Oncology; Charles University Hospital; Pilsen; Czech Republic
3. Department of Internal Medicine-Hemato-Oncology; University Hospital Brno; Brno; Czech Republic
4. Department of Hematology and Blood Transfusion; St. Elisabeth Oncology Institute; Bratislava; Slovakia
5. Department of Hematology; University Medical Center; Ljubljana; Slovenia
6. Dahl-Chase Diagnostic Services; Bangor; Maine