From the Section of Outcomes Research, Division of General Internal Medicine, Department of Internal Medicine, and Center for Clinical Effectiveness, Institute for Health Policy and Health Services Research, University of Cincinnati Medical Center, Cincinnati, Ohio. Address correspondence to: Joel Tsevat, MD, MPH, Section of Outcomes Research, Division of General Internal Medicine, University of Cincinnati Medical Center, Cincinnati, OH 45267-0535. E-mail: [email protected]
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Joel Tsevat (2000) studied this question.
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