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| The main reasons for inclusion | Number of patients |
|---|---|
| Upper abdominal pain | 168 |
| US/CT findings suggestive of CBD stones | 68 |
| Biliary pancreatitis | 29 |
| Total bilirubin level ≥4 mg/dL | 56 |
| Dilated CBD | 59 |
M, male; F, female; SD, standard deviation; GB, gallbladder; US, ultrasound; CT, computed tomography; CBD, common bile duct.
