Renaldi, Kaka, Adelia Nova Prahasary, Muhammad Hamdan Yuwaafi, and Muhammad Maulana. “Serum CA 19-9 of Pancreatic Solid Mass Patients in Dr. Cipto Mangunkusumo National Central General Hospital”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 21, no. 3 (December 30, 2020): 188–192. Accessed October 24, 2026. https://ina-jghe.com/index.php/jghe/article/view/757.