Combined stent-by-stent and stent-in-stent deployment for malignant hilar biliary obstruction using a novel metal stent with flexible cell and slim delivery - Inoue, Tadahisa; Ibusuki, Mayu; Kitano, Rena; Kobayashi, Yuji; Ito, Kiyoaki; Yoneda, Masashi (Endoscopy International Open, 2022)