1. Institute for Research in Operative Medicine (IFOM), Witten/Herdecke University
2. Institute for Medical Knowledge Management c/o Philipps University Marburg, Association of the Scientific Medical Societies in Germany
3. German Prostate Cancer Support Group
4. Office of the German Guideline Program in Oncology (GGPO), c/o German Cancer Society
5. Frauenselbsthilfe Krebs–Bundesverband e.V
6. German Agency for Quality in Medicine
7. Faculty of Health Sciences Brandenburg, Brandenburg Medical School (Theodor Fontane), Institute for Health Services and Health System Research