Endoscopic ultrasound-guided choledochoduodenostomy without fistula dilation using a novel fully covered metallic stent with a 5.9-Fr ultra-thin delivery system - Koga, Takehiko; Hijioka, Susumu; Hisada, Yuya; Maruki, Yuta; Nagashio, Yoshikuni; Okusaka, Takuji; Saito, Yutaka (Endoscopy, 2020)