Successful retrieval of a fractured migrated pancreatic stent using an endoscopic tapered sheath for severe pancreatic duct stenosis - Higashimori, Akira; Maruyama, Hirotsugu; Maeda, Natsumi; Ishikawa-Kakiya, Yuki; Yamamura, Masafumi; Tanoue, Kojiro; Fujiwara, Yasuhiro (Endoscopy, 2023)