Successful treatment using balloon-assisted enteroscopy for jejunal loop variceal bleeding after pancreaticoduodenectomy - Maeda, Natsumi; Maruyama, Hirotsugu; Higashimori, Akira; Ominami, Masaki; Fukunaga, Shusei; Nagami, Yasuaki; Fujiwara, Yasuhiro (Endoscopy, 2023)