[1] Hosp Graubuenden, Med Oncol, Chur, Switzerland
[2] Hosp Frankfurt, Oncol, Frankfurt, Germany
[3] Klinikum Frankfurt Hoechst, Onco, Frankfurt, Germany
[4] Klinikum Wels Grieskirchen GmbH, Oncol, Wels, Austria
[5] Facharztzentrum Neuss, Oncol, Neuss, Germany
[6] Alcedis, Biostat, Giessen, Germany
[7] Univ Hosp, Oncol, Mannheim, Germany