AUTHOR=Filippi Massimo , Balestrino Roberta , Agosta Federica TITLE=Editorial: Biomarkers of non-motor symptoms in Parkinson's disease and parkinsonisms JOURNAL=Frontiers in Neurology VOLUME=14 YEAR=2023 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2023.1257064 DOI=10.3389/fneur.2023.1257064 ISSN=1664-2295