RT Journal Article SR Electronic T1 Lower gastrointestinal bleeding caused by stercoral ulcer JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E134 OP E134 DO 10.1503/cmaj.100621 VO 183 IS 2 A1 Cheng-Chiang Huang A1 I-Fu Wang A1 Hsin-Hui Chiu YR 2011 UL http://www.cmaj.ca/content/183/2/E134.abstract