Siregar, L. and Ompusunggu, M. 2004. Gastrointestinal Bleeding, Jejunum Perforation and Intussusceptions Ileo-Jejunal Segment with Multiple Polyposis Due to Metastasic Melanoma with Out Primary Cutaneus Melanoma?. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy. 5, 3 (Jan. 2004), 105–108. DOI:https://doi.org/10.24871/532004105-108.