Koncoro, Hendra, I Ketut Mariadi, Gde Somayana, IGA Suryadarma, Nyoman Purwadi, and IDN Wibawa. 2013. “Age and Alarm Symptoms Predict Upper Gastrointestinal Malignancy Among Patients With Dyspepsia”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 14 (2):73-80. https://doi.org/10.24871/142201373-80.