1. Efficacy of carbon dioxide insufflation during gastric endoscopic submucosal dissection: a randomized, double-blind, controlled, prospective study 
Su Young Kim, MD, Jun-Won Chung, MD, PhD, Dong Kyun Park, MD, PhD, Kwang An Kwon, MD, PhD, Kyoung Oh Kim, MD, PhD, Yoon Jae Kim, MD, PhD 
Gastrointestinal Endoscopy 
Volume 82, Issue 6, Pages (December 2015)
DOI: /j.gie
Copyright © 2015 American Society for Gastrointestinal Endoscopy Terms and Conditions

2. Figure 1 Patient flow chart.
Gastrointestinal Endoscopy  , DOI: ( /j.gie )
Copyright © 2015 American Society for Gastrointestinal Endoscopy Terms and Conditions

3. Figure 2
Time-dependent changes in 100-mm visual analog scale scores after endoscopic submucosal dissection in the CO2 and air groups. Values are the mean ± standard deviation. VAS, visual analog scale; ESD, endoscopic submucosal dissection.
Gastrointestinal Endoscopy  , DOI: ( /j.gie )
Copyright © 2015 American Society for Gastrointestinal Endoscopy Terms and Conditions

4. Figure 3
Percentages of patients who were pain-free (score of 0 on the visual analog scale) after endoscopic submucosal dissection, showing statistically significant differences between 2 time points. ESD, endoscopic submucosal dissection.
Gastrointestinal Endoscopy  , DOI: ( /j.gie )
Copyright © 2015 American Society for Gastrointestinal Endoscopy Terms and Conditions