1. Institute of Epidemiology and Social Medicine University of Münster Münster Germany
2. Clinical Nutrition and Dietetics Unit Fondazione IRCCS Policlinico San Matteo Pavia Italy
3. Institute of Biomedical Technologies Italian National Research Council Milan Italy
4. Parkinson Institute ASST‐Pini‐CTO Milan Italy
5. Fondazione Grigioni per il Morbo di Parkinson Milan Italy
6. Rush Center for Integrated Microbiome & Chronobiology Research Chicago Illinois USA
7. Departments of Medicine, Physiology, Anatomy, and Cell Biology Rush University Chicago Illinois USA
8. Department of Biology University of Rome Tor Vergata Rome Italy
9. Department for Innovation in Biological, Agro‐food, and Forest Systems University of Tuscia Viterbo Italy
10. Institute of Biomembranes Bioenergetics and Molecular Biotechnologies, IBIOM, Italian National Research Council Bari Italy
11. DNA Sequencing and Genomics Laboratory, Institute of Biotechnology University of Helsinki Helsinki Finland
12. Department of Neurology Helsinki University Hospital, and Clinicum, University of Helsinki Helsinki Finland
13. Quadram and Earlham Institutes Norwich UK
14. Microbiology and Hygiene Group, Institute of Precision Medicine Furtwangen University Furtwangen Germany
15. Institute for Medical Microbiology and Hospital Epidemiology Hannover Medical School Hannover Germany