[O28-07] CO2 versus air insufflation according to sedation protocols during ERCP: A prospective randomized double-blind study
○Tae Hoon Lee, Su Jin Lee, Sang-Heum Park, Hyun Jong Choi, Sang Woo Cha, Jong Ho Moon, Young Deok Cho, Sun-Joo Kim(Dept. of Internal Medicine, Soonchunhyang University School of Medicine, Cheonan)
