Re-intervention for stent–stone complex using intraductal cholangioscopy with electrohydraulic lithotripsy after multiple biliary metal stenting - Inoue, Tadahisa; Nakade, Yukiomi; Kitano, Rena; Kobayashi, Yuji; Ishii, Norimitsu; Ito, Kiyoaki; Yoneda, Masashi (Endoscopy, 2018)