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. 2021 Feb 2;36(1):550–558. doi: 10.1007/s00464-021-08316-1

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Fig. 2 — A A contracted gallbladder with a sessile junction with the common bile duct may make it impossible to display the critical view of safety. B FFD culminating in the "funnel method' facilitating safer and further posterior dissection to achieve a complete cholecystectomy