2012 Society of American Gastrointestinal and Endoscopic Surgeons (SAGES)
- Endoscopic Submucosal Dissection (ESD) for Colorectal Tumors: 1000 colorectal ESD cases: the experiences of one specialist institute.
2012 Asian IBD symposium
- The incidence and characteristics of perianal problems in patients with ulcerative colitis in Korea.
- Foreign body reaction in the tract of anal fistulas
2013 Korean Society of Colorectal Surgeons
- Complex anal fistulas with anorectal openings