Successful guidewire placement across hilar malignant biliary stricture after deceased donor liver transplantation using new digital cholangioscopy - Hakuta, Ryunosuke; Kogure, Hirofumi; Nakai, Yousuke; Takahara, Naminatsu; Mizuno, Suguru; Tada, Minoru; Koike, Kazuhiko (Endoscopy, 2018)