RT Journal Article SR Electronic T1 An unusual cause of gastrointestinal bleeding in a young girl JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 583 OP 583 DO 10.1503/cmaj.060411 VO 175 IS 6 A1 Antiga, Emiliano A1 Melani, Lucilla A1 Caproni, Marzia A1 Fabbri, Paolo YR 2006 UL http://www.cmaj.ca/content/175/6/583.abstract