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| Experience with colorectal ESD before this study period (number of lesions) | Number of endoscopists(n = 13) | Number of PCM in the study period(n = 73) | Number of CM in the study period (n = 53) |
| ≥ 50 | 6 | 50 | 40 |
| 10 – 49 | 3 | 19 | 11 |
| < 10 | 4 | 4 | 2 |
ESD, endoscopic submucosal dissection; PCM, pocket-creation method; CM, conventional method.
