1. German Center for Neurodegenerative Diseases (DZNE), Site Rostock/Greifswald, Germany
2. Institute of Medical Psychology and Medical Sociology, University Medicine Rostock, Rostock, Germany
3. Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany
4. Department of Psychosomatic Medicine, University Medicine Rostock, Rostock, Germany
5. Department Epidemiology of Health Care and Community Health, Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany