Glucosamine/Chondroitin Arthritis Intervention Trial (GAIT)

Hospital for Joint Diseases, New York

*University of Pittsburgh, Pittsburgh

University of Pennsylvania, Philadelphia

*Case Western Reserve University, Beachwood

Northwestern University, Chicago

*Arthritis Research and Clinical Centers, Wichita

*University of Utah, Salt Lake City

*University of Arizona Arthritis Center, Tucson

*Cedars-Sinai Medical Center, Los Angeles

*University of California, Los Angeles, Los Angeles

*University of California San Francisco, San Francisco

Virginia Mason Research Center, Seattle

University of Alabama at Birmingham, Birmingham

*Indiana University School of Medicine, Indianapolis

University of Nebraska Medical Center, Omaha

Arthritis Consultation Center, Dallas