MachadoN., ChopraP., Al-HaddabiI., and 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, Vol. 12, no. 2, Mar. 2011, pp. 194-9, doi:10.6092/1590-8577/3354.