Piercing technique for mucosal hyperplasia at an uncovered part of a partially covered stent after endoscopic ultrasound-guided hepaticogastrostomy - Otsuka, Yasuo; Minaga, Kosuke; Hara, Akane; Masuta, Yasuhiro; Takenaka, Mamoru; Kudo, Masatoshi (Endoscopy International Open, 2023)