The MS Center of Atlanta, Atlanta, Georgia, United States
Michigan Institute of Neurological Disorders, Farmington Hills, Michigan, United States
Center for Neurologic Study, La Jolla, California, United States
Teva Investigational Site 009, Los Angeles, California, United States
Teva Investigational Site 004, Los Angeles, California, United States
Teva Investigational Site 008, New Haven, Connecticut, United States