Ramasamy, Villalan, Anand Lakshmanan, Senthilkumaran Govindaraj Raman, and Kannan Devigounder. 2018. “Primary Malignant Melanoma of the Duodenum: A Rare Case Report”. International Surgery Journal 5 (11):3771-74. https://doi.org/10.18203/2349-2902.isj20184663.