Shared environmental effects on multiple sclerosis susceptibility: conflicting evidence from twin studies

Affiliations

• ¹ 1 National Centre for Epidemiology, Surveillance and Health Promotion, Istituto Superiore di Sanità, Rome, Italy.
• ² 2 Centre for Experimental Neurological Therapies (CENTERS), Neurology and Department of Neurosciences, Mental Health and Sensory Organs (NESMOS), "Sapienza" University of Rome, Italy.
• ³ 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.