1. Department of General Practice, Medical Clinic III, Medical Faculty, Technische Universität Dresden, Germany
2. Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Germany
3. Institute of Sociology, Philosophical Faculty, Technische Universität Dresden, Germany
4. Department of Psychiatry, Psychotherapy and Psychosomatics, Alexianer Hospital Hedwigshöhe, St. Hedwig Hospital Berlin, Germany