AUTHOR=Crosiers David , Santens Patrick , Chaudhuri K. Ray TITLE=Editorial: Prodromal Parkinson's Disease JOURNAL=Frontiers in Neurology VOLUME=11 YEAR=2021 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2020.634490 DOI=10.3389/fneur.2020.634490 ISSN=1664-2295