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2. https://www.sages.org/publications/guidelines/clinical-spotlight-review-management-of-choledocholithiasis/.
3. One-stage Laproendoscopic Procedure versus Two-Stage Procedure in the Management for Gallstone Disease and Biliary Duct Calculi: A Systemic Review and Meta-Analysis;Prasson,2015
4. https://www.bsg.org.uk/wp-content/uploads/2019/12/Updated-guideline-on-the-management-of-common-bile-duct-stones-CBDS.pdf.