*Acute Pain Service, Department of Anesthesiology, and †Department of Surgical Gastroenterology, Hvidovre University Hospital, Copenhagen, Denmark
Supported by Grant 9902757 from the Danish Medical Research Council.
July 17, 2002.
Address correspondence to Mads U. Werner, Department of Anesthesiology 532, University Hospital, DK 2650 Hvidovre, Denmark. Address e-mail to email@example.com. Reprints will not be available from the authors.