(Kain) Assistant Professor of Anesthesiology and Pediatrics.
(Mayes) Associate Professor of Child Development, Pediatrics, and Psychology.
(Ferris) Senior Anesthesiology Resident.
(Pakes) Research Associate.
(Schottenfeld) Associate Professor of Psychiatry.
Received from the Departments of Anesthesiology, Yale Child Study Center, Pediatrics, and Psychiatry, Yale University School of Medicine, and the APT Foundation, New Haven, Connecticut. Submitted for publication September 6, 1995. Accepted for publication July 3, 1996. Supported in part by National Institute on Drug Abuse grant R01-DA-06025 and grant R18-DA-06915. Presented in part at the 1995 American Society of Anesthesiologists annual meeting, Atlanta, Georgia, October 21-25, 1995.
Address reprint requests to Dr. Kain: Department of Anesthesiology, Yale University School of Medicine, 333 Cedar St., New Haven, Connecticut 06510.