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
University of Louisville, Louisville, Kentucky, United States
North Carolina Clinical Research, Raleigh, North Carolina, United States
Allergy Associates Medical Group, Inc., San Diego, California, United States
Allergy Research Foundation, Los Angeles, California, United States
Asthma and Allergy Research Center, Sarasota, Florida, United States
Aero Allergy Research Labs of Savannah, Inc, Savannah, Georgia, United States
Fort Wayne Neurological Center, Fort Wayne, Indiana, United States
Four Rivers Clinical Research, Paducah, Kentucky, United States
Northern Michigan Neurology, Traverse City, Michigan, United States