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APA Citation
Martin, H., Kotha, S., Hussein, I., Goodchild, G., Johnson, G., Pereira, S., Chapman, M., Webster, G., Vessal, S., Thorburn, D., & Potts, J. (n.d.). pTH-042 Endoscopic ultrasound (EUS) for evaluation of unexplained double duct sign with normal liver biochemistry. Gut, 68, A33. http://access.bl.uk/ark:/81055/vdc_100135164182.0x00003d