title: Reply to letter: Plasma fasting cholesterol profiles and age at onset in Parkinson's disease.
authors.affiliation: Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
authors.forename: Christine R
authors.initials: CR
authors.lastname: Swanson
authors.affiliation: Department of Neurology, Columbia University Medical School, New York, New York, USA.
authors.forename: Roy N
authors.initials: RN
authors.lastname: Alcalay
authors.affiliation: Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
authors.forename: Alice
authors.initials: A
authors.lastname: Chen-Plotkin
mesh_terms: D018450:Disease Progression; D019054:Evoked Potentials, Motor / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009044:Motor Cortex / Q000503:physiopathology*; D010300:Parkinson Disease / Q000503:physiopathology*