Intracholecystic Papillary Neoplasm of the Gallbladder Preoperatively Diagnosed by Endoscopic Ultrasonography and Peroral Cholangioscopy. Issue 5 (11th May 2021) - Kuniyoshi, Noriyuki; Imazu, Hiroo; Hayama, Jo; Nomura, Shuzo; Kagawa, Atsunori; Hamana, Suguru; Osawa, Rota; Oki, Yoko; Fujisawa, Mariko; Aoki, Hiroshi; Higaki, Tokio; Takayama, Tadatoshi; et al.