1. Clinic of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
2. Enteric Nervous System Group, University of Applied Sciences Kaiserslautern and Pediatric Surgery, Mannheim-Heidelberg, Germany
3. Institute for Pathobiochemistry, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
4. Deutsches Institut für Demenz Prävention (DIDP), Neurodegeneration and Neurobiology, Saarland University, Homburg/Saar, Germany and Experimental Neurology, Saarland University, Homburg/Saar, Germany
5. MVZ Institut für Mikroökologie GmbH, Herborn, Germany