1. Pacific Northwest Evidence-based Practice Center, Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland
2. Department of Family Medicine, Oregon Health & Science University, Portland
3. School of Public Health, Oregon Health & Science University, Portland
4. Department of Internal Medicine, The Ohio State University; Columbus
5. RTI International, University of North Carolina at Chapel Hill Evidence-based Practice Center
6. Casey Eye Institute, Department of Ophthalmology, Oregon Health & Science University, Portland