1. Department of Oral and Maxillofacial Surgery Charité—Universitätsmedizin Berlin Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin Berlin Institute of Health Berlin Germany
2. Department of Radiation Oncology and Radiotherapy Charité—Universitätsmedizin Berlin Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin, and Berlin Institute of Health Berlin Germany
3. Institute of Medical Biometry and Medical Statistics Faculty of Medicine and Medical Center University of Freiburg Freiburg Germany