RT Journal Article SR Electronic T1 Incidence and prevalence rates in Budd–Chiari syndrome JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 889 OP 889 VO 58 IS 6 A1 R Rajani A1 S Almer YR 2009 UL http://gut.bmj.com/content/58/6/889.1.abstract AB