Björnsson Einar, Chari Suresh T, Smyrk Thomas C, Lindor Keith
Department of Internal Medicine, Division of Gastroenterology and Hepatology, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden.
Hepatology. 2007 Jun;45(6):1547-54. doi: 10.1002/hep.21685.