1 Department of Psychosomatic Medicine and Psychotherapy, Ortenau Klinikum, Teaching Hospital of University of Freiburg, Offenburg, Germany, andreas.joos@uniklinik-freiburg.de.
2 Department of Psychosomatic Medicine and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany, andreas.joos@uniklinik-freiburg.de.