title: Response to the letter to the Editor for the manuscript "Sleep and Fatigue in Multiple Sclerosis: A questionnaire-based, cross-sectional, cohort study" by Tomoyuki Kawada.
authors.affiliation: Institute of Neurology, Department of Geriatrics, Neurosciences and Orthopedics, Catholic University, Rome, Italy; Don Carlo Gnocchi Foundation, Italy. Electronic address: viviana.nociti@rm.unicatt.it.
authors.forename: Viviana
authors.initials: V
authors.lastname: Nociti
authors.affiliation: Institute of Neurology, Department of Geriatrics, Neurosciences and Orthopedics, Catholic University, Rome, Italy.
authors.forename: Francesco Antonio
authors.initials: FA
authors.lastname: Losavio
authors.affiliation: Institute of Neurology, Department of Geriatrics, Neurosciences and Orthopedics, Catholic University, Rome, Italy.
authors.forename: Valentina
authors.initials: V
authors.lastname: Gnoni
authors.affiliation: Institute of Neurology, Department of Geriatrics, Neurosciences and Orthopedics, Catholic University, Rome, Italy.
authors.forename: Anna
authors.initials: A
authors.lastname: Losurdo
authors.affiliation: Institute of Neurology, Department of Geriatrics, Neurosciences and Orthopedics, Catholic University, Rome, Italy.
authors.forename: Elisa
authors.initials: E
authors.lastname: Testani
authors.affiliation: Institute of Neurology, Department of Geriatrics, Neurosciences and Orthopedics, Catholic University, Rome, Italy.
authors.forename: Catello
authors.initials: C
authors.lastname: Vollono
authors.affiliation: Institute of Neurology, Department of Geriatrics, Neurosciences and Orthopedics, Catholic University, Rome, Italy.
authors.forename: Giovanni
authors.initials: G
authors.lastname: Frisullo
authors.affiliation: Institute of Neurology, Department of Geriatrics, Neurosciences and Orthopedics, Catholic University, Rome, Italy.
authors.forename: Valerio
authors.initials: V
authors.lastname: Brunetti
authors.affiliation: Institute of Neurology, Department of Geriatrics, Neurosciences and Orthopedics, Catholic University, Rome, Italy.
authors.forename: Massimiliano
authors.initials: M
authors.lastname: Mirabella
authors.affiliation: Institute of Neurology, Department of Geriatrics, Neurosciences and Orthopedics, Catholic University, Rome, Italy.
authors.forename: Giacomo
authors.initials: G
authors.lastname: Della Marca
mesh_terms: D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005221:Fatigue; D006801:Humans; D009103:Multiple Sclerosis; D011795:Surveys and Questionnaires