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MLA Citation
Mustafa A. Alani et al.. “S1516 Malignant Biliary Obstruction Diagnosed by Percutaneous Transhepatic Cholangioscopy With Spyglass Direct Visualization System.” American journal of gastroenterology, vol. 115, n.d., pp. S765–S766. http://access.bl.uk/ark:/81055/vdc_100168590222.0x00003e