From the Children's Hospital of Philadelphia and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania (S.E.C.); the Brigham and Women's Hospital and Harvard Medical School, Boston (M.K., D.S.Y.), and the Institute for Healthcare Improvement, Cambridge (F.A.G.), Massachusetts; the University of Utah, Salt Lake City (D.C.); the Association for Professionals in Infection Control and Epidemiology (K.M.A.) and the National Quality Forum (H.B.), Washington, D.C.; the Loyola University Chicago Stritch School of Medicine (D.N.G.), the Stroger (Cook County) Hospital and the Rush University Medical Center (R.A.W.), Chicago, the Joint Commission, Oakbrook Terrace (K.P., R.W.), and the Hines Veterans Affairs Medical Center, Hines (D.N.G.), Illinois; the Duke University Medical Center, Durham, North Carolina (D.J.A., K.S.K.); the Mount Sinai School of Medicine, New York, New York (D.P.C.); the Washington University School of Medicine, St. Louis, Missouri (E.R.D., V.F., J.M.); the Hackensack University Medical Center, Hackensack (P.G.) and the University of Medicine and Dentistry–New Jersey Medical School, Newark (P.G.), New Jersey; the Warren Alpert Medical School of Brown University and Rhode Island Hospital, Providence, Rhode Island (L.A.M.); the David Geffen School of Medicine at the University of California, Los Angeles (D.A.P.); the Johns Hopkins Medical Institutions and University, Baltimore, Maryland (T.M.P.); the Ann Arbor Veterans Affairs Medical Center and the University of Michigan Medical School, Ann Arbor, Michigan (S.S.); the Medical University of South Carolina, Charleston (C.D.S.); and the University of Manitoba, Winnipeg, Canada (E.L., L.N.).
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Accepted June 4, 2008; electronically published September 16, 2008.