1. From the Department of Hematology/Oncology, Onkologische Praxis, Frankfurt; Onkologische Gemeinschaftspraxis, Leipzig; Onkologische Schwerpunktpraxis, Minden; Department of Hematology, University Hospital, Jena; DSH Statistical Services, Rohrbach; Oncology Consulting, Miesbach, Germany; Hematology & Transfusion Medicine, National Hematological Center, Sofia; Department of Hematology, University Hospital, Varna; Department of Hematology, University Hospital, Plovdiv, Bulgaria; Department of Oncology,...