1. Department of Psychiatry and Psychotherapy University Medicine Greifswald Greifswald Germany
2. Department of Psychiatry and Psychotherapy Helios Hanseklinikum Stralsund Stralsund Germany
3. German Center for Neurodegenerative Diseases (DZNE) Greifswald Germany
4. Institute for Community Medicine University Medicine Greifswald Greifswald Germany