CHOLANGIOSCOPIC CRITERIA FOR INDETERMINATE BILIARY STENOSIS DIAGNOSIS - El Bacha, H; Harizi, R; Laugier, R; Leblanc, S; Barange, K; Fumex, F; Laquiere, A; Napoleon, B; Vedrenne, B; Grabar, S; Prat, F (Endoscopy, 2019)