About This Journal FREE

Editor: Frederick P. Rivara, MD, MPHDepartment of Pediatrics Child Health Institute University of Washington 6200 NE 74th St, Ste 120B Seattle, WA 98115-8160 Phone: (206) 685-3573 Fax: (206) 685-3572 e-mail: archpediatrics@jama-archives.org

Associate Editors: Abraham Bergman, MD, Seattle, Washington Dimitri A. Christakis, MD, MPH, Seattle, Washington Alain Joffe, MD, MPH, Baltimore, Maryland

Editorial Manager: Suzanne Shuey, Seattle, Washington

Statistical Consultant: Peter Cummings, MD, MPH, Bishop, California

David A. Brent, MD, Pittsburgh, Pennsylvania Maria T. Britto, MD, MPH, Cincinnati, Ohio Jeffrey P. Brosco, MD, PhD, Miami, Florida Mitchell B. Cohen, MD, Cincinnati, Ohio Matthew M. Davis, MD, MAPP, Ann Arbor, Michigan Carolyn DiGuiseppi, MD, MPH, Denver, Colorado M. Denise Dowd, MD, MPH, Kansas City, Missouri Mary Dozier, PhD, Newark, Delaware Chris Feudtner, MD, PhD, MPH, Philadelphia, Pennsylvania Jorge E. Gómez, MD, San Antonio, Texas John Lantos, MD, Chicago, Illinois Joyce M. Lee, MD, MPH, Ann Arbor, Michigan David J. Schonfeld, MD, Cincinnati, Ohio Samir S. Shah, MD, Philadelphia, Pennsylvania Billie L. Short, MD, Washington, DC Tina Q. Tan, MD, Chicago, Illinois

Book Reviews: Abraham Bergman, MD, Seattle, Washington Evidence-Based Journal Club: Dimitri A. Christakis, MD, MPH, Seattle, Washington Picture of the Month: Samir S. Shah, MD, Philadelphia, Pennsylvania Web Editor: Matthew M. Davis, MD, MAPP, Ann Arbor, Michigan

Offices: 515 N State St, Chicago, IL 60610Catherine D. DeAngelis, MD, MPH, Editor in Chief Scientific Publications & Multimedia Applications Cheryl Iverson, Managing Editor

Department Director: Paula Glitman Manuscript Editing Manager: Brenda Gregoline Senior Manuscript Editor: Tracy Frey Manuscript Editors: Laura Adamczyk, Roya Khatiblou, Shannon L. Sparenga Freelance Manuscript Editing Manager: Diane L. Cannon Freelance Manuscript Editing Coordinators: Vickey Golden, Mary A. Kingzette, Connie L. Manno Freelance Copy Editors and Copyreaders: Catherine A. Alden, Ashley Clark, Lisa M. Cluver, Mary Coerver-Connolly, Allison Esposito, GeorgeMary Gardner, Robin Husayko, Laura King, Nicole C. Netter Editorial Systems Managers: Paul Frank, Monica Mungle Systems Programmer/Internet Specialist: J.D. Neff Editorial Assistant: Wanda Hill

Executive Assistant to the Editor: Marla A. Hall

Director: Margaret Winker, MD Electronic Media Department Director: Michelle Kurzynski Associate Web Editors: Christopher Hastings, Peter Kim Web Administrative Assistant: Reuben Rios

Senior VP & Publisher: Robert A. Musacchio, PhD

Division Director: Jeffery J. Bonistalli Manager: Kathy Russell Staff: Mirna Monal, Jennifer Seminerio Sales Representative: Tim Melroy

Assistant Publisher, Classified Advertising/Circulation Promotion: Geoffrey Flick Manager: Thalia Moss Staff: Tem Harrier, Kim Jenkins, Allison Kruse, Michelle Sharpe Director, Marketing Support Services: Mark Thornbury Staff: Nancy Bell, Tricia Leonardis, Dennis Sammartino Director, Reprints: Mark Kuhns Staff: Susan Lovenberg

Division Director: Richard Newman Director, Worldwide Sales: Vida Damijonaitis Circulation Sales & MarketingManagers: Silvana Benzoni, Saskia Bolore, Jeremy Nielsen Staff: Rebecca Haas, Christine Hearne Director, Marketing and Product Development: Michael T. Clarke Manager: Elizabeth Solaro Staff: Millette Jackson-Bates, Sara Nicholson Director, Online Journal Publishing: Julie Harrington

Division Director: Vanessa Hayden Directors: Karen Adams-Taylor, Sue Sherrill Managers: David Antos, Karen Branham, Suzanne J. Bukovsky, Debbie Camp, Susan Chiara, Diane Darnell, Susana Eloy de Vitale, Karl Elvin, Mary Ellen Johnston, Michael McGraw, Chris Meyer, Sean O’Donnell, Sean Ohlson, Phil O'Leary, Ryan Patella, Susan Price, James Schleitwiler, Stacy Tucker Advertising and Production Services: Karen Allbright, Daniel Alvarez, Bernadette Bauer, Rhonda Bailey Brown, Anna Goins, Terri Hanley, Euwanaha Joiner-Smith, Brian McCartney, Noemi Olmo, John Pantlind, Cindy Rendlen, Denise Steinhauser, Ellen Yoshihara Circulation Processing: Julie Burton, Michael Deegan, Rosa Eng, Donovan Hanson, Felicia Kyles, Kathryn Osten Composition and New Media: Gail Barrett, Regina Brownlee, Brenda Chandler-Grayer, Scott Curl, Amy Evers, Teri Hutchison, Mary Ann Kuranda, Joshua Lampinen, Patricia E. Panek, La'son Diggs Sledge, George Thomson Graphics: Joe Amft, Maria Duda, Fred Furtner, Carolyn Hall, Maria Kowalkowski, JoAnne Weiskopf Proofreading: Carol Joy Farrell, Daniel James, Judith A. Literskis, Teresa H. Omiotek, Barbara Wojtowicz, Agnes A. Zarkadas

Michael D. Maves, MD, MBA, Executive Vice President, Chief Executive Officer Bernard L. Hengesbaugh, Chief Operating Officer Robert A. Musacchio, PhD, Senior Vice President, Publishing & Business Services

All articles published, including editorials, letters, and book reviews, represent the opinions of the authors and do not reflect the policy of the American Medical Association, the Editorial Board, or the institution with which the author is affiliated, unless this is clearly specified.

Copyright 2008 by the American Medical Association. All rights reserved. Reproduction without permission is prohibited.