From the Departments of Epidemiology (R.S.W., P.C., N.S.W.) and Pediatrics (R.S.W., L.Q.), University of Washington School of Public Health and Community Medicine, and Harborview Injury Prevention and Research Center (P.C.), Seattle, Washington, and the Department of Pediatrics, Oregon Health Sciences University (S.B.), Portland, Oregon.
Submitted for publication March 5, 2001.
Accepted for publication June 8, 2001.
Supported, in part, by grant R49/CCR010141-03 from the Centers for Disease Control and Prevention.
Presented, in part, at the 29th Educational and Scientific Symposium of the Society of Critical Care Medicine, February 11–15, 2000, Orlando, Florida.
Address for reprints: R. Scott Watson, MD, MPH, Pediatric Critical Care Medicine, Children’s Hospital of Pittsburgh, 3705 Fifth Avenue, Pittsburgh, PA 15213-2583; email: watsonrs@anes.upmc.edu.
