Lee, Han Hee, Seung Kyoung Kim, Hyun Ho Choi, Hyung-Keun Kim, Sung Soo Kim, Hiun-Suk Chae, Hyunjung Cho, and Young-Seok Cho. 2016. “Post-Colonoscopy Colorectal Cancers in Average-Risk Korean Subjects With a Normal Initial Colonoscopy”. Turkish Journal of Gastroenterology 27 (1):17-22. https://doi.org/10.5152/tjg.2015.150286.