(Vyas) Anesthesiologist, Department of Anesthesiology, Marlboro Hospital, Marlboro, Massachusetts.
(O'Connell) Assistant Professor of Anesthesiology, Department of Anesthesiology, University of Massachusetts Medical Center, Worcester, Massachusetts.
(Vacanti) Professor and Chairman of Anesthesiology, Department of Anesthesiology, University of Massachusetts Medical Center, Worcester, Massachusetts.
Received from the Department of Anesthesiology, Marlboro Hospital, Marlboro, Massachusetts, and the Department of Anesthesiology, University of Massachusetts Medical Center, Worcester, Massachusetts. Submitted for publication February 12, 1996. Accepted for publication May 15, 1996.
Address reprint requests to Dr. Vyas: Department of Anesthesiology, Marlboro Hospital, 57 Union Street, Marlboro, Massachusetts 01752.