MachadoN.; ChopraP.; Al-HaddabiI.; Al-QadhiH. Large Duodenal Gastrointestinal Stromal Tumor Presenting with Acute Bleeding Managed by a Whipple Resection. A Review of Surgical Options and the Prognostic Indicators of Outcome. JOP. Journal of the Pancreas, v. 12, n. 2, p. 194-199, 9 mar. 2011.