1. Department of Medical Informatics, Northwest Permanente PC, Portland, Oregon
2. Department of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, Oregon
3. School of Health Information Sciences, University of Texas, Houston, Texas
4. Thomson Micromedex, Denver, Colorado
5. Department of Medicine, University of Pennsylvania, School of Medicine, Philadelphia, Pennsylvania
6. Departments of Surgery and Enterprise Information Services, Cedars-Sinai Medical Center, Los Angeles, California