Cahyono, S. B., Bayupurnama, P., Ratnasari, N., Triwikatmani, C., Indrarti, F., Maduseno, S., & Nurdjanah, S. (2014). Factors that Influence Cecal Intubation Rate in Unsedated Patients during Colonoscopy. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy, 15(1), 9–14. https://doi.org/10.24871/15120149-14