Detective flow imaging endoscopic ultrasound for locating optimal puncture site for a poorly vascularized pancreatic mass - Otsuka, Yasuo; Minaga, Kosuke; Hara, Akane; Masuta, Yasuhiro; Takenaka, Mamoru; Chikugo, Takaaki; Kudo, Masatoshi (Endoscopy International Open, 2024)