Syam, Ari Fahrial, Murdani Abdullah, Dadang Makmun, Marcellus Simadibrata, Dharmika Djojoningrat, Chudahman Manan, Abdul Aziz Rani, and Daldiyono Daldiyono. “The Causes of Upper Gastrointestinal Bleeding in the National Referral Hospital: Evaluation on Upper Gastrointestinal Tract Endoscopic Result in Five Years Period”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 6, no. 3 (January 12, 2005): 71–74. Accessed October 3, 2026. https://ina-jghe.com/index.php/jghe/article/view/156.