Fig. 4From: Comparison of efficiency and safety between dual-clip and rubber band-assisted ESD and conventional ESD for colonic lateral spreading tumors (LSTs) with different levels of technical difficulty: a retrospective case–control studyThe operation time of DCRB-ESD and C-ESD based on CS-CRESD before and after PSM. a Before the PSM, b after the PSM. *, statistically significant. ns, not statistically significantBack to article page