Global citimpact: 2.30 Researcher at Comparative Effectiveness, Cost, and Outcomes Research Center, University of Washington, Seattle (SDR, BWB, JLF, JGJ)Department of Radiology, University of Washington, Seattle (SDR, BWB, JGJ)Pharmaceutical Outcomes Research & Policy Program, University of Washington, Seattle (BWB, SDS)Center for Biomedical Statistics, University of Washington, Seattle (PJH, BAC)Department of Rehabilitation Medicine, University of Washington, Seattle (JLF)Departments of Neurological Surgery, Health Services, Pharmacy and Orthopedics & Sports Medicine, University of Washington, Seattle (JGJ) .