- Original Articles Gastroenterology Diagnostic accuracy of 22/25-gauge core needle in endoscopic ultrasound-guided sampling: systematic review and meta-analysis
- Hyoung-Chul Oh, Hyun Kang, Jae Young Lee, Geun Joo Choi, Jung Sik Choi
- Korean J Intern Med. 2016;31(6):1073-1083.
- Oral udenafil and aceclofenac for the prevention of post-endoscopic retrograde cholangiopancreatography pancreatitis in high-risk patients: a randomized multicenter study
- Tae Yoon Lee, Jung Sik Choi, Hyoung-Chul Oh, Tae Jun Song, Jae Hyuk Do, Young Koog Cheon
- Korean J Intern Med. 2015;30(5):602-609.