Fluoroscopy-guided shaped endobiliary biopsy at endoscopic retrograde cholangiography can accurately diagnose biliary neoplasia: Results from a large cohort oleh Bao-can Wang, Kelly K. Wang, Navin Paul, Vijay Jayaraman, Qiang Wang, Yazan Abboud, Laith H. Jamil, Srinivas Gaddam, Simon K. Lo