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Regional distribution of institutions according to the classification by procedural volume of ESD.
| Region | Procedural volume of ESD | |||
|---|---|---|---|---|
| Very low (n = 131) | Low (n = 119) | High (n = 24) | Very high (n = 12) | |
| The Seoul Capital Area | 47 (35.9%) | 64 (53.8%) | 10 (41.7%) | 7 (58.3%) |
| Metropolitan cities | 33 (25.2%) | 23 (19.3%) | 7 (29.2%) | 4 (33.3%) |
| Provinces | 51 (38.9%) | 32 (26.9%) | 7 (29.2%) | 1 (8.3%) |
ESD endoscopic submucosal dissection.
