1. Northwestern University; Chicago Illinois USA
2. University of Pennsylvania; Philadelphia Pennsylvania USA
3. Institute for Neurodegenerative Disorders; New Haven Connecticut USA
4. University of Iowa; Iowa City Iowa USA
5. Eli Lilly; Indianapolis Indiana USA
6. University of California; San Francisco California USA
7. National Institute on Aging; National Institutes of Health; Bethesda Maryland USA
8. Clinical Trials Coordination Center; University of Rochester; Rochester New York USA
9. University of Southern California; Los Angeles California USA
10. Paracelsus-Elena Klinik; Kassel Germany
11. University of California; San Diego California USA
12. Indiana University; Indianapolis Indiana USA
13. Stanford University Medical Center; Stanford California USA
14. Michael J Fox Foundation; New York NY USA