Abstract
1Invited author, Institute of Medical Oncology, Inselspital and University of Berne, CH-3010 Berne, Switzerland; 2Assigned task force member, University Hospital Salzburg, Dept of Hematology/Oncology, Muellnerhauptstrasse 48, 5020 Salzburg, Austria; 3Assigned task force member, Oncology, Kantonsspital, CH-4101 Bruderholz/BL, Switzerland