title: Shared environmental effects on multiple sclerosis susceptibility: conflicting evidence from twin studies.
authors.affiliation: 1 National Centre for Epidemiology, Surveillance and Health Promotion, Istituto Superiore di Sanità, Rome, Italy.
authors.forename: Corrado
authors.initials: C
authors.lastname: Fagnani
authors.affiliation: 2 Centre for Experimental Neurological Therapies (CENTERS), Neurology and Department of Neurosciences, Mental Health and Sensory Organs (NESMOS), "Sapienza" University of Rome, Italy.
authors.forename: Vito A G
authors.initials: VA
authors.lastname: Ricigliano
authors.affiliation: 2 Centre for Experimental Neurological Therapies (CENTERS), Neurology and Department of Neurosciences, Mental Health and Sensory Organs (NESMOS), "Sapienza" University of Rome, Italy.
authors.forename: Maria Chiara
authors.initials: MC
authors.lastname: Buscarinu
authors.affiliation: 1 National Centre for Epidemiology, Surveillance and Health Promotion, Istituto Superiore di Sanità, Rome, Italy.
authors.forename: Lorenza
authors.initials: L
authors.lastname: Nisticò
authors.affiliation: 2 Centre for Experimental Neurological Therapies (CENTERS), Neurology and Department of Neurosciences, Mental Health and Sensory Organs (NESMOS), "Sapienza" University of Rome, Italy marco.salvetti@uniroma1.it.
authors.forename: Marco
authors.initials: M
authors.lastname: Salvetti
authors.affiliation: 1 National Centre for Epidemiology, Surveillance and Health Promotion, Istituto Superiore di Sanità, Rome, Italy.
authors.forename: Maria Antonietta
authors.initials: MA
authors.lastname: Stazi
authors.affiliation: 2 Centre for Experimental Neurological Therapies (CENTERS), Neurology and Department of Neurosciences, Mental Health and Sensory Organs (NESMOS), "Sapienza" University of Rome, Italy.
authors.forename: Giovanni
authors.initials: G
authors.lastname: Ristori
mesh_terms: D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D009103:Multiple Sclerosis; D012042:Registries