Cahyono, Suharjo B, and Putut Bayupurnama. “How to Negotiate Difficult Colonoscopy to Optimize Cecal Intubation Rate”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 14, no. 2 (September 19, 2013): 97–102. Accessed October 13, 2026. https://www.ina-jghe.com/index.php/jghe/article/view/407.