Ralf Ulrich Trappe and Hanno Riess
Charite Cancer Center
Department of Hematology and Oncology
Charite-Universitätsmedizin Berlin
Campus Virchow Clinic
Augustenburger Platz 1
13353 Berlin
Germany
Tel.: +49 30 450 553510
Fax: +49 30 450 553996
E-mail: ralf.trappe@charite.de