TY - JOUR AU - Larghi, A; Waxman, I TI - Endoscopic direct cholangioscopy by using an ultra-slim upper endoscope: a feasibility study JO - Gastrointest Endosc VL - 63 PY - 2006 DO - 10.1016/j.gie.2005.07.050 L3 - PubMed-ID: 16650553 SP - 853 EP - 857 ER -