1. The Pacific Northwest Evidence-based Practice Center, Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, OR, USA
2. Evidence-based Synthesis Program (ESP) Coordinating Center, VA Portland Health Care System, Portland, OR, USA
3. Division of Infectious Diseases, Oregon Health & Science University, Portland, OR, USA
4. Department of Ophthalmology, Casey Eye Institute, Portland, OR, USA
5. Department of Public Health & Preventive Medicine, Oregon Health & Science University, Portland, OR, USA
6. Department of Family Medicine, Oregon Health & Science University, Portland, OR, USA