Prasetyo, A. et al. 2012. The Profil of Esophagogastroduodenoscopy for Elderly Patients at Kariadi Hospital Semarang. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy. 13, 1 (Jan. 2012), 14–18. DOI:https://doi.org/10.24871/131201214-18.