Please refer to this study by its ClinicalTrials.gov identifier: NCT00071487
| University of Alabama at Birmingham |
| Birmingham, Alabama, United States, 35294-0006 |
| Arizona Arthritis Research |
| Paradise Valley, Arizona, United States, 85253 |
| University of Arizona |
| Tucson, Arizona, United States, 85724 |
| Scripps Clinic |
| LaJolla, California, United States, 92037 |
| Stanford University School of Medicine |
| Palo Alto, California, United States, 94304 |
| Arthritis Care Center, Inc. |
| San Jose, California, United States, 95126-1650 |
| Boling Clinical Trials |
| Rancho Cucamonga, California, United States, 91730 |
| University of Southern California |
| Los Angeles, California, United States, 90033 |
| UCDMC |
| Sacramento, California, United States, 95817-1418 |
| Cedars-Sinai Medical Center |
| Los Angeles, California, United States, 90048 |
| Arthritis Associates & Osteoporosis Center Of Colorado Springs |
| Colorado Springs, Colorado, United States, 80910 |
| Washington Hospital Center |
| Washington, District of Columbia, United States, 20010 |
| Tampa Medical Group, P.A. |
| Tampa, Florida, United States, 33614 |
| Arthritis and Rheumatic Disease Specialties |
| Aventura, Florida, United States, 33180 |
| Rheumatology Associates of Central Florida |
| Orlando, Florida, United States, 32806 |
| Emory University |
| Atlanta, Georgia, United States, 30303 |
| Radiant Research Boise |
| Boise, Idaho, United States, 83704 |
| Institute of Arthritis and Research |
| Idaho Falls, Idaho, United States, 83404 |
| Northwestern University Medical School |
| Chicago, Illinois, United States, 60611 |
| Rheumatology Associates |
| Chicago, Illinois, United States, 60612 |
| Medical Specialists |
| Munster, Indiana, United States, 46321 |
| Kentuckiana Center for Better Bone and Joint Health |
| Louisville, Kentucky, United States, 40202 |
| Ochsner Clinic Foundation |
| Baton Rouge, Louisiana, United States, 70809 |
| Ochsner Clinic Foundation |
| New Orleans, Louisiana, United States, 70121 |
| Center for Rheumatology and Bone Research |
| Wheaton, Maryland, United States, 20902 |
| The Osteoporosis and Arthritis Clinical Trial Center |
| Cumberland, Maryland, United States, 21502 |
| Johns Hopkins Hospital |
| Baltimore, Maryland, United States, 21287 |
| University of Maryland |
| Baltimore, Maryland, United States, 21201 |
| Tufts--New England Medical Center |
| Boston, Massachusetts, United States, 02111 |
| The University of Michigan Health System |
| Ann Arbor, Michigan, United States, 48109-0358 |
| Washington University in St. Louis |
| St. Louis, Missouri, United States, 63110 |
| Arthritis Center of Nebraska |
| Lincoln, Nebraska, United States, 68506 |
| Strafford Medical Associates, P.A. |
| Dover, New Hampshire, United States, 03820 |
| Arthritis and Osteoporosis Center |
| Concord, New Hampshire, United States, 03301 |
| SUNY-Downstate Medical Center |
| Brooklyn, New York, United States, 11203 |
| The Center for Rheumatology |
| Albany, New York, United States, 12206 |
| Aair Research |
| Rochester, New York, United States, 14618 |
| North Shore University Hospital |
| Manhasset, New York, United States, 11030 |
| Jacobi Medical Center |
| Bronx, New York, United States, 10461 |
| University of North Carolina at Chapel Hill |
| Chapel Hill, North Carolina, United States, 27599-7280 |
| Arthritis Clinic and Carolina Bone and Joint |
| Charlotte, North Carolina, United States, 28210 |
| Wake Forest University School of Medicine |
| Winston-Salem, North Carolina, United States, 27157 |
| Stat Research Inc. |
| Dayton, Ohio, United States, 45402 |
| Oklahoma Center For Arthritis Therapy & Research |
| Tulsa, Oklahoma, United States, 74114 |
| Oklahoma Medical Research Foundation |
| Oklahoma City, Oklahoma, United States, 73104 |
| Bone and Joint Hospital |
| Oklahoma City, Oklahoma, United States, 73103 |
| Thomas Jefferson University Hospital |
| Philadelphia, Pennsylvania, United States, 19107 |
| University of Pittsburgh School of Medicine & ASPH |
| Pittsburgh, Pennsylvania, United States, 15261 |
| Rheumatic Disease Associates |
| Willow Grove, Pennsylvania, United States, 19090 |
| UT Southwestern Medical Center at Dallas |
| Dallas, Texas, United States, 75390-8884 |
| Research Associates of North Texas |
| Dallas, Texas, United States, 75246 |
| Texas Research Center |
| Sugar Land, Texas, United States, 77479 |
| Arthritis and Rheumatic Disease Clinic |
| Ogden, Utah, United States, 84044 |
| Physicians Research Options, LC |
| Sandy, Utah, United States, 84070 |
| Arthritis Clinic of Northern Virginia, P.C. |
| Arlington, Virginia, United States, 22205 |
| Edmonds Rheumatology Associates |
| Edmonds, Washington, United States, 98026-8047 |
| Arthritis Northwest Rheumatology |
| Spokane, Washington, United States, 99204 |
| The Medical College of Wisconsin , Inc |
| Milwaukee, Wisconsin, United States, 53226 |
| Gundersen Clinic, Ltd. |
| La Crosse, Wisconsin, United States, 54610 |
| Marshfield Medical Research Foundation |
| Wausau, Wisconsin, United States, 54401 |
| Toronto Western Hospital |
| Toronto, Ontario, Canada, M5T 2S8 |
| McGill University Health Center |
| Montreal, Quebec, Canada, H3G 1A4 |