To the Editor Dr Sheffield and colleagues1 reported an instrumental variable analysis of the association between cholecystectomy with vs without intraoperative cholangiography and the risk of common duct injury among elderly Texans. Sheffield et al1 concluded intraoperative cholangiography “is not effective as a preventive strategy against common duct injury during cholecystectomy.”
Huesch MD, Romley J. Intraoperative Cholangiography During Cholecystectomy. JAMA. 2013;310(24):2673–2674. doi:10.1001/jama.2013.282642
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