Endoscopic Ultrasound: an upper or decrease endoscopy with the ultrasound wand connected to the endoscope, which allows to visualise your biliary program. In advance of submitting, authors must make their research permitted because of the applicable research ethics committee or institutional review board. If human participants were involved, manuscripts should https://www.directivepublications.org/journal-of-gastroenterology-hepatology-and-endoscopy-research/