1. Division of Movement Disorders; Department of Neurology; University of Louisville School of Medicine; Louisville Kentucy USA
2. Movement Disorder Center; Department of Neurosciences; University of California San Diego; San Diego California USA
3. Department of Environmental Health Sciences; Johns Hopkins Bloomberg School of Public Health; Baltimore Maryland USA
4. Department of Bioinformatics and Biostatistics; University of Louisville; Louisville Kentucky USA
5. Department of Neurology; University of Alabama at Birmingham; Birmingham Alabama USA
6. Morto and Gloria Shulman Movement Disorders Centre and the Edmond J. Safra Program in Parkinson's Research, Toronto Western Hospital, University of Toronto; Toronto Ontario Canada
7. Department of Neurology; Emory University; Atlanta Georgia USA
8. InMotion; Warrensville Heights Ohio USA
9. Department of Neurology; University of Maryland; Baltimore Maryland USA
10. Department of Neurological Sciences; Rush University; Chicago Illinois USA
11. Department of Neurology; University of Colorado; Denver Colorado USA
12. Department of Neurology; University of California Los Angeles; California USA
13. Department of Neurology; University of Utah; Salt City Utah USA