RT Journal Article SR Electronic T1 A rare cause of upper gastrointestinal bleeding JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1261 OP 1261 DO 10.1503/cmaj.051600 VO 174 IS 9 A1 George Rakovich YR 2006 UL http://www.cmaj.ca/content/174/9/1261.abstract AB