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2. Cholangiocarcinoma Presenting after Eight Years of Treatment of IgG4-Related Autoimmune Pancreatitis with Steroids
   Hiroharu Shinozaki et al, 2021, Case Reports in Gastroenterology CrossRef
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   Ha Won Hwang et al, 2020, Medicine CrossRef
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   Shravan Sridhar et al, 2020, Contemporary Diagnostic Radiology CrossRef