The ARCHIVES OF PEDIATRICS & ADOLESCENT MEDICINE (ISSN 1072-4710) is published monthly by the American Medical Association, 515 N State St, Chicago, IL 60610-0946, and is an official publication of the Association. The ARCHIVES OF PEDIATRICS & ADOLESCENT MEDICINE reaches more than 30 900 readers in over 83 countries each month. Periodicals postage paid at Chicago, Ill, and at additional mailing offices. GST registration No. 12622 5556 RT. Canada Post International Publications Mail (Canadian Distribution) Sales Agreement No. 318728. POSTMASTER, send all address changes to Archives of Pediatrics & Adolescent Medicine, c/o the AMA Unified Service Center, American Medical Association, 515 N State St, Chicago, IL 60610. Printed in the USA.