1. Division of Hematology and Hemostaseology, Department of Internal Medicine I; Medical University of Vienna; Vienna; Austria
2. Institute of Environmental Health; Medical University of Vienna; Vienna; Austria
3. Department of Obstetrics and Gynecology; Medical University of Vienna; Vienna; Austria
4. 3rd Medical Department for Hematology and Oncology; Hanusch Hospital; Vienna; Austria
5. Department of Internal Medicine V (Haematology and Oncology); Medical University of Innsbruck; Innsbruck; Austria
6. Department of Internal Medicine I; Hospital of the Elisabethinen Linz; Linz; Austria
7. Department of Hematology, Oncology and Clinical Immunology; Heinrich Heine University; Düsseldorf; Germany