AUTHOR=Liguori Claudio , Pierantozzi Mariangela , Olivola Enrica , Mercuri Nicola B. , Stefani Alessandro TITLE=Commentary: Clinical Correlates of Raphe Serotonergic Dysfunction in Early Parkinson’s Disease JOURNAL=Frontiers in Neurology VOLUME=Volume 6 - 2015 YEAR=2015 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2015.00261 DOI=10.3389/fneur.2015.00261 ISSN=1664-2295