Koncoro, Hendra, Putu Prathiwi Primadharsini, Luh Putulin Indrayani, and I Dewa Nyoman Wibawa. 2015. “Upper Gastrointestinal Endoscopy As Diagnostic Test for Detection of Gastric Malignancy in Sanglah Hospital Denpasar”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 16 (1):2-6. https://doi.org/10.24871/16120152-6.