Puncture angle on an endoscopic ultrasound image is independently associated with unsuccessful guidewire manipulation of endoscopic ultrasound-guided hepaticogastrostomy: a retrosp... oleh Akihisa Ohno, Nao Fujimori, Toyoma Kaku, Kazuhide Matsumoto, Masatoshi Murakami, Katsuhito Teramatsu, Keijiro Ueda, Masayuki Hijioka, Akira Aso, Yoshihiro Ogawa