You are completing this questionnaire because you are interested in participating in MS clinical research conducted at the USC Multiple Sclerosis Comprehensive Care Center and Research Group and would like to be contacted regarding clinical trials for which you may qualify. The information you provide will be kept in a secure database, maintained by the staff of the Multiple Sclerosis Comprehensive Care Center and Research Group and will not be shared with anyone outside this institution. All fields are optional with the exception of those marked with an astrix (*). If you do not feel comfortable answering these questions, please do not complete the qustionnaire. If in the future you wish to be removed from this database, please email us at mscare@usc.edu or call 323-442-6870 with your name and date of birth, and your information will be promptly removed.