1. de Lau, L. M. & Breteler, M. M. Epidemiology of Parkinson’s disease. Lancet Neurol. 5, 525–535 (2006). PubMed Google Scholar 2. Tysnes, O.-B. & Storstein, A. Epidemiology of Parkinson’s disease. J. Neural Transm. 124, 901–905 (2017). PubMed Google Scholar 3. Bach, J.-P., Ziegler, U., Deuschl, G., Dodel, R. & Doblhammer-Reiter, G. Projected numbers of people with movement disorders in the years 2030 and 2050. Mov. Disord. 26, 2286–2290 (2011). PubMed Google Scholar 4. Dorsey, E. R. et al.