Novel approach to bilateral biliary drainage: EUS-guided hepaticoduodenodenostomy plus hepaticogastrostomy in malignant hilar biliary obstruction - Susumu Hijioka; Yoshikuni Nagashio; Yuta Maruki; Shota Harai; Daiki Agarie; Daiki Yamashige; Kohei Okamoto; Shin Yagi; Soma Fukuda; Yasuhiro Komori; Masaru Kuwada; Yutaka Saito; et al. (Endoscopy International Open)