Cao, Dianbo, Xiaoyan Sun, Jimin Du, and Yutian Sun. “Duodenal Lipoma Associated With Ectopic Duodenal Glands”. Clinics and Practice 1, no. 4 (December 7, 2011): e128. Accessed October 21, 2019. https://www.clinicsandpractice.org/index.php/cp/article/view/cp.2011.e128.