RT Journal Article SR Electronic T1 Upper gastrointestinal bleeding: a review JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 97 OP 105 VO 49 IS 2 A1 Broughan, Thomas A. A1 Vogt, David P. YR 1982 UL http://www.ccjm.org/content/49/2/97.abstract AB