RT Journal Article SR Electronic T1 A 77-year-old man with nonvariceal upper gastrointestinal bleeding JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 363 OP 365 DO 10.1503/cmaj.131288 VO 186 IS 5 A1 Kyle J. Fortinsky A1 Nathan M. Stall A1 Alan N. Barkun YR 2014 UL http://www.cmaj.ca/content/186/5/363.abstract