The role of peroral video cholangioscopy in patients with IgG4-related sclerosing cholangitis

Takao Itoi, Terumi Kamisawa, Yoshinori Igarashi, Hiroshi Kawakami, Ichiro Yasuda, Fumihide Itokawa, Yuui Kishimoto, Masaki Kuwatani, Shinpei Doi, Seiichi Hara, Fuminori Moriyasu, Todd H. Baron