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Takao, H., Yamahira, K., Doi, I. et al. Compression of the extrahepatic bile duct by the portal vein: a diagnostic pitfall of MR cholangiopancreatography. Eur Radiol 15, 1069–1070 (2005). https://doi.org/10.1007/s00330-004-2471-5
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DOI: https://doi.org/10.1007/s00330-004-2471-5