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