Time to treatment in primary percutaneous coronary intervention.

From the Health Services Research and Development Center of Excellence, Ann Arbor Veterans Affairs Medical Center, and the Department of Internal Medicine, Division of Cardiovascular Disease, University of Michigan Medical School — both in Ann Arbor (B.K.N.); the Section of Health Policy and Administration, Department of Epidemiology and Public Health and the Robert Wood Johnson Clinical Scholars Program, Department of Medicine, Yale University School of Medicine, New Haven, CT (E.H.B., H.M.K.); and the Section of Cardiovascular Medicine, Department of Medicine, Yale University School of Medicine, and the Center for Outcomes Research and Evaluation, Yale– New Haven Hospital — both in New Haven, CT (H.M.K.). Address reprint requests to Dr. Krumholz at 333 Cedar St., Rm. I-456 SHM, P.O. Box 208088, New Haven, CT 06520-8088, or at harlan.krumholz@ yale.edu.