1. Section of Neurosurgery, VA Connecticut Healthcare System, West Haven, Connecticut, , Department of Neurosurgery, Yale University, New Haven, Connecticut
2. Section of Outcomes Research, Division of General Internal Medicine, Department of Internal Medicine, University of Cincinnati Medical Center, Cincinnati, Ohio, Center for Clinical Effectiveness, Institute for the Study of Health, University of Cincinnati Medical Center, Cincinnati, Ohio, Veterans Affairs Medical Center, Cincinnati, Ohio
3. Section of Decision Sciences and Clinical Systems Modeling, Division of General Internal Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, Division of General Internal Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania