title: Comment on Szewczyk-Krolikowski et al.: the influence of age and gender on motor and non-motor features of early Parkinson's disease: initial findings from the Oxford Parkinson Disease Center (OPDC) discovery cohort.
authors: Center for Neurodegenerative Diseases (CEMAND), University of Salerno, Italy; Department of Neurosciences, Odontostomatology and Reproductive Sciences, University "Federico II", Naples, Italy.
authors: Marina
authors: M
authors: Picillo
authors: Center for Neurodegenerative Diseases (CEMAND), University of Salerno, Italy.
authors: Paolo
authors: P
authors: Barone
authors: Center for Neurodegenerative Diseases (CEMAND), University of Salerno, Italy; IDC Hermitage-Capodimonte, Naples, Italy.
authors: Marianna
authors: M
authors: Amboni
authors: Department of Neurosciences, Odontostomatology and Reproductive Sciences, University "Federico II", Naples, Italy.
authors: Marcello
authors: M
authors: Moccia
authors: Center for Neurodegenerative Diseases (CEMAND), University of Salerno, Italy. Electronic address: mpellecchia@unisa.it.
authors: Maria Teresa
authors: MT
authors: Pellecchia
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D010300:Parkinson Disease / Q000150:complications* / Q000453:epidemiology*
keywords: Gender; Gender differences; Non motor; Parkinson disease