3.1. Sample size calculation
±, colorectal ESD
A single-center comparative study, in which 50 patients undergoing colorectal ESD were randomized, 27 to the S-O clip group and 23 to the conventional ESD group, found that the procedure time was significantly shorter in the S-O clip than in the conventional ESD group (37.4 ± 32.6 vs 67.1 ± 44.1 minutes, 