1. Stanford University Stanford California
2. Kavanagh Statistical Consulting LLC Apex North Carolina
3. Metroplex Clinical Research Center Dallas Texas
4. Arthritis and Rheumatism Associates PC Wheaton Maryland
5. Cabrillo Center for Rheumatic Disease San Diego California
6. Arizona Arthritis & Rheumatology Associates Phoenix
7. Altoona Center for Clinical Research Duncansville Pennsylvania
8. Nēsos Redwood City California
9. Stanford University, Stanford, California, and Gilead Sciences Inc Foster City California