Authors' Affiliations: The Swedish Polyposis Registry, Department of Gastroenterology and Hepatology, Karolinska University Hospital, Stockholm, Sweden (Ms Fritzell, Drs Björk, and Hultcrantz); Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm, Sweden (Ms Fritzell and Drs Perrson and Wettergren); and Department of Medicine, Karolinska Institute, Stockholm, Sweden (Drs Björk and Hultcrantz).
This study was supported by grants from the Cancer Society in Stockholm, the King Gustaf V Jubilee Fund, and the Center for Healthcare Science at Karolinska Institute.
Corresponding author: Kaisa Fritzell, RN, MGC, Department of Neurobiology, Care Sciences and Society, Division of Nursing, Karolinska Institutet, Alfred Nobels Allé 23, 141 83 Huddinge, Sweden ([email protected]).
Accepted for publication August 5, 2009.