U Igel1, M Romppel2, J Baar3, E Brähler4, G Grande5. 1. Faculty of Architecture and Social Sciences, Leipzig University of Applied Sciences, Leipzig, Germany; Institute of Medical Psychology and Medical Sociology, University of Leipzig, Leipzig, Germany. Electronic address: igel@sug.htwk-leipzig.de. 2. Faculty of Human and Health Sciences, University of Bremen, Bremen, Germany. 3. Faculty of Architecture and Social Sciences, Leipzig University of Applied Sciences, Leipzig, Germany; Institute of Medical Psychology and Medical Sociology, University of Leipzig, Leipzig, Germany. 4. Institute of Medical Psychology and Medical Sociology, University of Leipzig, Leipzig, Germany; Clinic and Polyclinic for Psychosomatic Medicine and Psychotherapy, Mainz, Germany. 5. Leipzig University of Applied Sciences, Leipzig, Germany.