Author

Changhyun Lee 1

1 Department of Internal Medicine,Seoul National University Hospital Healthcare System Gangnam Center,Seoul,Korea, Republic Of

PEPSINOGEN AND INCIDENT CHRONIC ATROPHIC GASTRITIS AND INTESTINAL METAPLASIA: A LONGITUDINAL STUDY

Seung Joo Kang, Donghee Kim, Changhyun Lee, SU JIN CHUNG

THE FACTORS ASSOCIATED WITH COMPLETE ENDOSCOPIC RESECTION OF COLORECTAL ADENOMAS IN EXPERTS AND FELLOW-TRAINEES

Ji Min Choi, Changhyun Lee, Seong-Joon Koh, Jong Pil Im, Ji Won Kim, Joo Sung Kim, Byeong Gwan Kim, Kook Lae Lee

THIRTY-DAY MORTALITY AFTER PERCUTANEOUS GASTROSTOMY BY ENDOSCOPIC VERSUS RADIOLOGIC PLACEMENT: A SYSTEMATIC REVIEW AND META-ANALYSIS

Joo Hyun Lim, Seung Ho Choi, Changhyun Lee, Jong In Yang, Joo Sung Kim

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