OPTIONAL–By checking this box, you are consenting to the processing of your personal information by Sanofi, its affiliates, and the business service companies working with Sanofi to provide you with additional communications about neurological disorders and relevant Sanofi products, promotions, services, and research studies, and ask your opinion about such information and topics, including through market research and disease-related surveys. You can withdraw your consent at any time. For more information on our use of information, see our privacy policy.