Silver Book Fact
Marras C, Beck J, Bower J, Roberts E, et al. Prevalence of Parkinson’s Disease Across America. npj Parkinson's Disease. 2018; 4(1): 1-7. https://www.nature.com/articles/s41531-018-0058-0
Hamilton J, The Michael J. Fox Foundation for Parkinson's Research, Yang W, The Lewin Group, et al. The Economic Burden of Parkinson’s Disease; 2019. https://www.silverbook.org/publication/silver-book-parkinsons-disease-fact-sheet/. Accessed June 11, 2019