1. Center for Health Systems Research Sutter Health Walnut Creek California USA
2. The Comparative Health Outcomes Policy and Economics Institute, School of Pharmacy University of Washington Seattle Washington USA
3. Center for Epidemiology Versus Arthritis University of Manchester Manchester UK
4. Innovation in Medical Evidence Development and Surveillance (IMEDS) Reagan‐Udall Foundation for the Food and Drug Administration Washington DC USA
5. Division of Epidemiology University of Utah Salt Lake City Utah USA
6. Aetion, Inc. Arlington Massachusetts USA