Cholangiocarcinoma in primary sclerosing cholangitis is associated with long-standing inflammatory bowel disease. A long-term follow-up of 394 primary sclerosing cholangitis patients: Kirsten M Boberg, Rikshopitalet, Oslo Norway; Annika Bergquist, Karolinska Institute, Huddinge Hospital, Stockholm Sweden; Stephen Mitchell, John Radcliffe Hospital, Oxford Uk; Albert Pres, Hospital Clinic I Provincial, Barcelona Spain; Floriano Rosina, Gradenigo Hospital, Turin Italy; Ulrika Broomé, Karolinska Institute, Huddinge Hospital, Stockholm Sweden; Roger Chapman, John Radcliffe Hospital, Oxford Uk; Olav Fausa, Thore Egeland, Rikshopitalet, Oslo Norway; Giuseppe Rocca, Molinette Hospital, Turin Italy; Erik Schurumpf, Rikshospitalet, Oslo Norway