TY - JOUR AN - 44 AU - de Palma,C.G. AU - Pezzullo,A. AU - Rega,M. TI - Unilateral placement of metallic stents for malignant hilar obstruction: a prospective study. JO - Gastrointest Endosc PY - 2003 VL - 58 SP - 50-53 M2 - 50 DO - 10.1067/mge.2003.310 L3 - PubMed-ID: 12838220 ER -