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Comparison of postoperative complications
| Group | EPBID | EST | P value |
| Pancreatitis | 3/88 | 11/88 | 0.03 |
| Transverse diameter of stone < 10 mm | 0/43 | 7/61 | 0.04 |
| Transverse diameter of stone ≥ 10 mm | 3/45 | 4/27 | 0.41 |
| Bleeding | 0/103 | 3/103 | 0.25 |
EPBID: Endoscopic papillary balloon intermittent dilatation; EST: Endoscopic sphincterotomy.
