Presentation Information
[S4-7]Inside placement of plastic versus metal stents for unresectable malignant biliary hilar obstructions：A multicenter randomized control trial
Kanno Yoshihide1,2, Ito Kei1,2, Kawakami Yujiro1,3 (1.MiPS Study Group, Japan, 2.Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan, 3.Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine)
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