[1] Univ Hosp Cologne, Dept Internal Med 1, Cologne, Germany
[2] Univ Hosp Cologne, Ctr Integrated Oncol Cologne Bonn, Cologne, Germany
[3] Tech Univ, Inst Med Stat & Epidemiol, Munich, Germany
[4] Univ Hosp Brno, Dept Internal Med Hematol & Oncol, Brno, Czech Republic
[5] Heidelberg Univ, Internal Med 5, Heidelberg, Germany
[6] Med Univ Vienna, Vienna Gen Hosp, Dept Internal Med 1, Vienna, Austria
[7] Johannes Gutenberg Univ Mainz, Dept Hematol & Oncol, Mainz, Germany
[8] Praxis Hamatol & Onkol, Cottbus, Germany
[9] Klinikum Schwabing, Dept Hematol Oncol Immunol Palliat Care Infect Di, Munich, Germany