[1] Univ Cologne, Cologne Univ Hosp, Fac Med, Dept Internal Med 1, Cologne, Germany
[2] Univ Cologne, Fac Human Sci, Dept Clin Psychol & Psychotherapy, Cologne, Germany
[3] Univ Cologne, Fac Med, Cologne, Germany
[4] Univ Cologne, Univ Hosp Cologne, Inst Med Sociol Hlth Serv Res & Rehabil Sci, Cologne, Germany
[5] Univ Cologne, Fac Human Sci, Cologne, Germany
[6] Univ Cologne, Univ Hosp Cologne, Fac Med, Inst Hlth Econ & Clin Epidemiol IGKE, Cologne, Germany
[7] Univ Cologne, Fac Med, Inst Med Stat & Computat Biol, Cologne, Germany
[8] Univ Appl Sci & Arts Dortmund, Dept Comp Sci Med Informat, Dortmund, Germany
[9] Krebsgesell Nordrhein Westfalen EV, Dusseldorf, Germany
[10] House Canc Patient Support Assoc Germany, Bonn, Germany
[11] Hautarztpraxis Wiener Platzde, Cologne, Germany
[12] PIOH Koln Praxis Internist Onkol & Hamatol, Cologne, Germany
[13] GFO Kliniken Troisdorf, Troisdorf, Germany
[14] Johanna Etienne Krankenhaus gGmbH, Neuss, Germany
[15] Kliniken Maria Hilf GmbH, Monchengladbach, Germany