title: Commentary: Clinical Correlates of Raphe Serotonergic Dysfunction in Early Parkinson's Disease.
authors.affiliation: Neurophysiopathology Unit, Department of Systems Medicine, University of Rome "Tor Vergata" , Rome , Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: Liguori
authors.affiliation: Department of Systems Medicine, Movement Disorders Centre, Fondazione Policlinico Tor Vergata , Rome , Italy.
authors.forename: Mariangela
authors.initials: M
authors.lastname: Pierantozzi
authors.affiliation: Department of Systems Medicine, Movement Disorders Centre, Fondazione Policlinico Tor Vergata , Rome , Italy.
authors.forename: Enrica
authors.initials: E
authors.lastname: Olivola
authors.affiliation: Neurophysiopathology Unit, Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy; Department of Systems Medicine, Movement Disorders Centre, Fondazione Policlinico Tor Vergata, Rome, Italy; IRCCS Fondazione Santa Lucia, Rome, Italy.
authors.forename: Nicola B
authors.initials: NB
authors.lastname: Mercuri
authors.affiliation: Department of Systems Medicine, Movement Disorders Centre, Fondazione Policlinico Tor Vergata, Rome, Italy; IRCCS Fondazione Santa Lucia, Rome, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Stefani
keywords: 5-hydroxyindolacetic acid; CSF; SPECT; neuroimaging; serotonin